Wednesday, August 18, 2021

How Panpsychism and Its Fault Lines Shade in the Ongoing Mystery of Consciousness

“We’ve barely begun to understand our place in the cosmos. As we continue to look out from our planet and contemplate the nature of reality, we should remember that there is a mystery right here where we stand.”

How Panpsychism and Its Fault Lines Shade in the Ongoing Mystery of Consciousness

“Meditate often on the interconnectedness and mutual interdependence of all things in the universe,” the aging Marcus Aurelius instructed.

“Any live mind today is of the very same stuff as Plato’s & Euripides,” the young Virginia Woolf meditated in her diary two millennia later. “It is this common mind that binds the whole world together; & all the world is mind.”

Two years earlier, in the first year of the twentieth century and the final year of his life, the uncommonly minded Canadian psychiatrist Maurice Bucke had formalized this notion in his visionary, controversial book Cosmic Consciousness: A Study in the Evolution of the Human Mind, which influenced generations of thinkers ranging from Albert Einstein to Abraham Maslow to Steve Jobs.

Bucke himself had been greatly influenced by, then befriended and in turn influenced, Walt Whitman — a poet enraptured by how science illuminates the interconnectedness of life, who contemplated the strangest and most paradoxical byproduct of consciousness “lifted out from all else, calm, like the stars, shining eternal”: our sense of self.

Science was young then — it still is — and the world was old, and the mind was old, its dwelling-place practically unchanged since the cranium of early Homo sapiens began accommodating a brain comparable to our own some three hundred thousand years ago. With neuroscience yet to be born, it fell on the poets and the philosophers to meditate on the complexities of consciousness — the sole valve between reality and our experience, made of the same matter as the stars. Today, neuroscience remains a young and insecure science, as crude as Galilean astronomy — and as revolutionary in the revelations it has already contoured, yet to be shaded in with the nuances of understanding that might, just might, one day illuminate the fundaments of consciousness.

Plate from The Principles of Light and Color: Including Among Other Things the Harmonic Laws of the Universe, the Etherio-atomic Philosophy of Force, Chromo Chemistry, Chromo Therapeutics, and the General Philosophy of the Fine Forces, Together with Numerous Discoveries and Practical Applications by Edwin D. Babbitt, 1878. (Available as a print and as stationery cards.)

Until that day comes, we have a panoply of theories about what it is that flickers on the cave walls of the cranium to irradiate our entire experience of life and reality. The most compelling — and the most controversial — of them are what Annaka Harris examines with equal parts openhearted curiosity and intelligent consideration in Conscious: A Brief Guide to the Fundamental Mystery of the Mind (public library).

At the center of her inquiry is an idea ancient Eastern spiritual traditions, a century of Western neurocognitive science, and epochs of philosophy share: the illusory nature of the self — the self that is always in flux yet rooted in our experience of time, the self we build and rebuild upon a narrative foundation, the self separated from the other by a marvelously permeable boundary, the self of which nature can so easily and profoundly strip us during a solar eclipse, the self into which we fortress our whole sense of identity and from which we peer out to receive our whole view of the world, only to discover again and again that the fortress is an appearance in consciousness filled with what Borges called “the nothingness of personality.”

One of neuroscience founding father Santiago Ramón y Cajal’s little-known drawings of the brain.

Drawing on the intricate neurological processes and disorders that shape and misshape our conscious experience, on the behavior-altering effects various parasites have on their hosts, and on her own experience of staggering changes in preference, habit, and temperament on the hormonal cocktail of pregnancy, Harris writes:

The idea that “I” am the ultimate source of my desires and actions begins to crumble [and] it’s hard to see how our behavior, preferences, and even choices could be under the control of our conscious will in any real sense. It seems much more accurate to say that consciousness is along for the ride — watching the show, rather than creating or controlling it. In theory, we can go as far as to say that few (if any) of our behaviors need consciousness in order to be carried out. But at an intuitive level, we assume that because human beings act in certain ways and are conscious — and because experiences such as fear, love, and pain feel like such powerful motivators within consciousness — our behaviors are driven by our awareness of them and otherwise would not occur.

And yet, she observes, many of the actions we attribute to consciousness and hold up as proof of it could, in theory, take place without consciousness, in a machine programmed to operate by logical sequences resulting in those selfsame actions. (That, after all, is the most thrilling and terrifying question of artificial intelligence.) She posits a curious meta-exception:

Consciousness seems to play a role in behavior when we think and talk about the mystery of consciousness. When I contemplate “what it’s like” to be something, that experience of consciousness presumably affects the subsequent processing taking place in my brain. And almost nothing I think or say when contemplating consciousness would make any sense coming from a system without it.

[…]

When I talk about the mystery of consciousness — referring to something I can distinguish and wonder about and attribute (or not) to other entities — it seems highly unlikely that I would ever do this, let alone devote so much time to it, without feeling the experience I am referring to (for the qualitative experience is the entire subject, and without it, I can have no knowledge of it whatsoever). And when I turn these ideas over in my mind, the fact that my thoughts are about the experience of consciousness suggests that there is a feedback loop of sorts and that consciousness is affecting my brain processing.

What emerges is the intimation that we are not merely machines that think — after all, many of our machines now “think” in the sense of processing information and adapting it to govern behavior — but machines that think about thinking, lending our biochemical machinery an edge of the miraculous not (yet) explicable by our science, which remains our mightiest technology of thought. She observes:

Most of our intuitions about what qualifies as evidence of consciousness affecting a system don’t survive scrutiny. Therefore, we must reevaluate the assumptions we tend to make about the role consciousness plays in driving behavior, as these assumptions naturally lead to the conclusions we draw about what consciousness is and what causes it to arise in nature. Everything we hope to uncover through consciousness studies — from determining whether or not a given person is in a conscious state, to pinpointing where in the evolution of life consciousness first emerged, to understanding the exact physical process that gives birth to conscious experience — is informed by our intuitions about the function of consciousness.

Where our intuitions break down most dramatically and where the breakdown most disorients us is in what may be the most poorly branded and therefore poorly understood theory of consciousness: panpsychism.

Art by Arthur Rackham for a rare 1917 edition of the Brothers Grimm fairy tales. (Available as a print.)

Coined in the sixteenth century by the Italian philosopher and proto-scientist Francesco Patrizi, whose work inspired Galileo, from the Greek pan (“all”) and psyche (“mind” or “spirit”), panpsychism is the idea that all matter is endowed with the capacity for subjective experience of immaterial quality — the sort of experience we call, in its expression familiar to us, consciousness.

In the epochs since, as the world slowly began shedding the cloth of the supernatural and began seeking in mystical notions a kernel of secular and scientifically verifiable truth, panpsychism came closer and closer to information theory and the modern scientific understanding of the physicality of the universe. (There are echoes of panpsychism in the great theoretical physicist John Archibald Wheeler’s famous “It-for-Bit” theory, asserting that “observer-participancy gives rise to information” because “all things physical are information-theoretic in origin and this is a participatory universe.”)

Plate from Le monde physique by Amédée Guillemin, 1882. (Available as a print, as a face mask, and as stationery cards.)

With an eye to the muddling, misconstrual, and ample misapplications of panpsychism as a framework that could broaden the conversation on consciousness but instead often shuts it down, Harris does the essential and courageous public service of lens-clearing:

Those of us who want to push this conversation forward have an important obligation to clearly distinguish panpsychic views from the false conclusions people tend to draw from them — namely, that panpsychism somehow justifies or explains a variety of psychic phenomena — following from the incorrect assumption that consciousness must entail a mind with a single point of view and complex thoughts. Ascribing some level of consciousness to plants or inanimate matter is not the same as ascribing to them human minds with wishes and intentions like our own. Anyone who believes the universe has a plan for us or that he can consult with his “higher self” for medical advice should not feel propped up by the modern view of panpsychism.

[…]

Unfortunately, it seems quite hard for us to drop the intuition that consciousness equals complex thought. But if consciousness is in fact a more basic aspect of the universe than previously believed, that doesn’t suddenly give credence to your neighbor’s belief that she can communicate telepathically with her ficus tree. In actuality, if a version of panpsychism is correct, everything will still appear to us and behave exactly as it already does.

Plate from The Principles of Light and Color by Edwin D. Babbitt, 1878. (Available as a print and as stationery cards.)

Such appropriations of panpsychism are to the study of consciousness what the pseudoscience of phrenology is to neuroscience — contours of promising regions of exploration on our ever-evolving map of reality, shaded in with human bias. Rather than having the egalitarian view of consciousness-across-matter they seek to espouse, these misinterpretations impose on the concept of consciousness self-referential standards rife with human exceptionalism, making of nature an uncanny valley that betrays both nature and our humanity.

Paradoxically, this misunderstanding of panpsychism is often used as an argument against panpsychism itself, not against its misunderstanding. But to actually consider a lichen or a quark endowed with a measure of consciousness is to recognize that its experience cannot, by structural definition, be anything close to our subjective human experience of consciousness — our qualia and their byproduct: the sense of self.

Considering what might be the greatest intuitive challenge to psychism, known as the “combination problem” — how the small constituents of matter, each the carrier of primitive consciousness, can combine into larger entities that have new and different consciousnesses, including ours — Harris observes that much of the challenge stems from a reflexive confusion:

For many scientists and philosophers, the combination problem presents the biggest obstacle to accepting any description of reality that includes consciousness as a widespread feature. However, the obstacle we face here once again seems to be a case of confusing consciousness with the concept of a self, as philosophers and scientists tend to speak in terms of a “subject” of consciousness. The term “self” is usually used to describe a more complex set of psychological characteristics — including qualities such as self-confidence or a capacity for empathy — but a “subject” still describes an experience of self in its most basic form… Perhaps it’s wrong to talk about a subject of consciousness, and it’s more accurate to instead talk about the content available to conscious experience at any given location in space-time, determined by the matter present there — umwelts applied not just to organisms, but to all matter, in every configuration and at every point in space-time.

Iris Murdoch — one of the most brilliant and underappreciated philosophical minds our species has produced — provided a potent antidote to the combination problem in her lovely notion of unselfing, rooted in the recognition that “the self, the place where we live, is a place of illusion.” In this light, the combination problem becomes decidedly less problematic — without the notion of a subject, a concrete entity to be combined with another concrete entity, there is no combining to be done. Consciousness becomes both the vessel of experience and the content of experience, and transcends both — more field than form.

Plate from An Original Theory or New Hypothesis of the Universe by Thomas Wright, 1750. (Available as a print, as a face mask, and as stationery cards.)

After citing research on split-brain patients, in whom mental function and the contents of consciousness can be divided in astonishing ways, Harris writes:

[Without a self], consciousness could persist as is, while the character and content change, depending on the arrangement of the specific matter in question. Maybe content is sometimes shared across large, intricately connected regions and sometimes confined to very small ones, perhaps even overlapping. If two human brains were connected, both people might feel as if the content of their consciousness had simply expanded, with each person feeling a continuous transformation from the content of one person to the whole of the two, until the connection was more or less complete. It’s only when you insert the concepts of “him,” “her,” “you,” and “me” as discrete entities that the expanding of content for any area of consciousness (or even multiple areas merging) becomes a combination problem.

Harris ends her rigorous reconnaissance mission of the terra semicognita of consciousness studies with the telescopic perspective that is the poetry of possibility:

Humanity is young, and we’ve barely begun to understand our place in the cosmos. As we continue to look out from our planet and contemplate the nature of reality, we should remember that there is a mystery right here where we stand.

A century ago — a century during which humanity split the atom, unraveled the mysteries of our genetic code, and heard the sound of spacetime for the first time — quantum theory originator Max Planck insisted that “science cannot solve the ultimate mystery of nature… because… we ourselves are part of nature and therefore part of the mystery that we are trying to solve.” In the first year of that century, Lord Kelvin took the podium at the British Association of Science to declare that “there is nothing new to be discovered in physics,” while at the same moment, a young patent clerk in Zurich was incubating the ideas that would converge into his theory of relativity, forever transfiguring our elemental understanding of reality. It is our human nature to consider the inconceivable impossible, again and again mistaking the parameters of the conceivable for the perimeter of the possible. But it is also the nature of the human mind — that material miracle of electrical and poetic impulses — to transcend its own limits of imagination again and again, inventing new parameters of thought that broaden the perimeter of the possible until it becomes real.

Complement Conscious with Probable Impossibilities — physicist Alan Lightman’s poetic meditation on what makes life worth living — then revisit William James’s foundational work on consciousness and the four features of transcendent experiences.

Astronomers see galaxies in ultra-high definition


Pallab Ghosh - Science correspondent
BBC
Tue., August 17, 2021

Astronomers have captured some of the most detailed images ever seen of galaxies in deep space.

They are in much higher definition than normal and reveal the inner workings of galaxies in unprecedented detail.

Many of the images could yield insights into the role of black holes in star and planet formation.

The researchers say that the pictures will transform our understanding of how galaxies evolve.

The images are of the radio waves emitted by the galaxies. Researchers often study the radio waves from astronomical objects rather than the visible light they give off because it enables them to see things that would otherwise be blocked by the Earth's atmosphere or dust and gas in faraway galaxies.

Many regions of space that are dark to our eyes, actually burn brightly in the radio waves they give off. This allows astronomers to peer into star-forming regions or into the heart of galaxies.

What is new is that the team has dramatically improved the resolution of radio images by linking together more than 70,000 small antennae spread across nine European counties.

Combining radio signals from so many antennas is not a straight-forward process. The team has spent six years developing a completely new way of collecting the signal from each antenna, digitising it, transporting it to a to central processor, and then combining all the data into images that are not only of enormous scientific interest but also of great beauty.

The accomplishment is a technical tour de force and was led by Dr Leah Morabito from Durham University, UK.

"To work on the data for so long, and then to finally get such images and be able be the first person to see what it looks like is just incredible," she told BBC News.

"I walked around with a huge smile on my face for the rest of the day, because I felt so proud that I was able to make these images and be able to see something nobody had ever seen before".

The image at the top of the page was produced by a member of Dr Morabito's team. It shows a galaxy that is barely visible, sitting in the middle of jets of material in orange, shooting out from either side, each one much larger than the galaxy itself.

The jets are caused by a supermassive black hole at the heart of the galaxy- an object with such strong gravity not even light can escape. It normally sucks in material - but the inward pull also creates forces around the black hole that result in material being spat out, far into space.

Such jets have been observed before - but astronomers have obtained new scientific information from the dark bands on the jet on the right, which have not been seen before. These, the astronomers believe, represent periods of relative inactivity by the black hole - when it spits out less material. The image therefore gives researchers an insight into the black hole's "sleep cycle".

The picture above shows two galaxies colliding. the bright spot on the one on the left is caused by exploding stars - creating what is effectively a galactic wind - blowing dust and gas away from it.


Early Galaxy

The light from the galaxy shown directly above originated when the Universe was only 2.6 billion years old. Above and below it are jets of material thrown out by the black hole within. Normally such early galaxies can't be studied in detail. But now, for the first time, the astronomers have seen the structure of one of them at radio frequencies - which provides critical scientific information about how the black hole is interacting with its surroundings.

The images are revealing that galaxies are much more than a collection of stars. They are dynamic sun- and planet-making factories, powered by black holes, according to Dr Neal Jackson, from the University of Manchester.

"Even seasoned astronomers go 'wow!' when they see these images," he told me.

"It's become very clear that, in order to understand galaxy evolution, we need to understand the black hole right at the very centre, because it appears to have a fairly fundamental influence on how galaxies evolve and that is what these images allow us to do," says Dr Jackson.

"These high-resolution images allow us to zoom in to see what's really going on when supermassive black holes launch these jets of material."

The picture on the left is of a galaxy observed in visible light. The middle image shows the same galaxy but seen at radio frequencies and on the right is the high-definition image.

Dr Morabito says that images like these are helping astronomers learn just how these processes, that created stars and planets - including our own Solar System - actually work.

"We are really beginning to understand how galaxies have evolved. And the black holes are a massive part of that because their jets can take away fuel for star formation. And as they push outwards, they can disrupt the galaxies. They can even trigger star formation or quench it and make it happen less," she said.

The first set of results have led to the publication of nine scientific papers on the dynamics of black holes in galaxies. But this is just the start for the team. They plan to scan millions of galaxies over the next few years.

"And that's really what we need to be able to understand, the whole complete picture of how black holes impact galaxy evolution," says Dr Morabito,

"I think we're definitely in for some surprises. Whenever you start doing something new in astronomy you always find out things that you never expected and that's what I really look forward to."

The international network of telescopes is known as the Low Frequency Array known as Lofar for short. Most of the antennas are located in Exloo in the Netherlands.


Stunning images of galaxies reveal how black holes devour stars - 

BBC News
Aug 17, 2021

Astronomers have captured some of the most detailed images ever seen of galaxies in deep space. 

The pictures reveal their inner workings in unprecedented detail, and show the role of black holes in creating, and destroying, stars and planets. 

Clive Myrie presents BBC News at Ten reporting by science correspondent Pallab Ghosh.


CTHULHU STUDIES

Unlike humans, cuttlefish retain sharp memory of specific events in old age, study finds

Unlike humans, cuttlefish retain sharp memory of specific events in old age, study finds
The common cuttlefish (Sepia officinalis). Credit: Roger Hanlon

Cuttlefish can remember what, where, and when specific events happened—right up to their last few days of life, researchers have found. The results, published this week in the journal Proceedings of the Royal Society B, are the first evidence of an animal whose memory of specific events does not deteriorate with age.

Researchers from the University of Cambridge, U.K., the Marine Biological Laboratory (MBL), Woods Hole, Mass., and the University of Caen, France, conducted  with 24 common cuttlefish, Sepia officinalis. Half of them were 10-12 months old—not-quite adult, and the other half were 22-24 months old—equivalent to humans in their 90s.

"Cuttlefish can remember what they ate, where and when, and use this to guide their feeding decisions in the future. What's surprising is that they don't lose this ability with age, despite showing other signs of ageing such as loss of muscle function and appetite," said first author Alexandra Schnell of the University of Cambridge's Department of Psychology, who conducted the experiments at the Marine Biological Laboratory in collaboration with MBL Senior Scientist Roger Hanlon.

As humans age, they gradually lose the ability to remember experiences that happened at particular times and places—for example, what we had for dinner last Tuesday. This is termed , and its decline is thought to be due to deterioration of a part of the brain called the hippocampus.

Cuttlefish do not have a hippocampus, and their brain structure is dramatically different to ours. The vertical lobe of the cuttlefish brain is associated with learning and . This does not deteriorate until the last two to three days of the animal's life, which the researchers say could explain why episodic-like memory is not affected by age in cuttlefish.

Unlike humans, cuttlefish retain sharp memory of specific events in old age, study finds
Alex Schnell with a cuttlefish tank at the Marine Biological Laboratory, Woods Hole,
 Mass., where this experimental work was conducted. Credit: Grass Foundation

To conduct the experiment, the cuttlefish were first trained to approach a specific location in their tank marked with a black and white flag. Then they were trained to learn that two foods they commonly eat—grass shrimp, which they prefer, and king prawn—were available at specific flag-marked locations and after specific delays. This training was repeated daily for four weeks.

Then the cuttlefishes' recall of which food would be available, where, and when was tested. To make sure they hadn't just learned a pattern, the two feeding locations were unique each day. All the cuttlefish—regardless of age—watched which food first appeared at each flag and used that to work out which feeding spot was best at each subsequent mealtime.

"The old cuttlefish were just as good as the younger ones in the memory task—in fact, many of the older ones did better in the test phase. We think this ability might help cuttlefish in the wild to remember who they mated with, so they don't go back to the same partner," said Schnell.

Cuttlefish only breed at the end of their life. By remembering who they mated with, where, and how long ago, the researchers think this helps the cuttlefish to spread their genes widely by mating with as many partners as possible.

Cuttlefish have short lifespans—most live until around two years old—making them a good subject to test whether memory declines with age. Since it is impossible to test whether animals are consciously remembering things, the authors used the term 'episodic-like memory' to refer to the ability of  to remember what, where and when specific things happened.

Quick-learning cuttlefish pass 'the marshmallow test'

More information: Episodic-like memory is preserved with age in cuttlefish, Proceedings of the Royal Society B, rspb.royalsocietypublishing.or … .1098/rspb.2021.1052

Journal information: Proceedings of the Royal Society B 

Provided by University of Cambridge 

Ageing cuttlefish can remember the details of last week’s dinner

Peer-Reviewed Publication

UNIVERSITY OF CAMBRIDGE

Cuttlefish in tank 

IMAGE: CUTTLEFISH IN TANK view more 

CREDIT: DR ALEX SCHNELL, UNIVERSITY OF CAMBRIDGE

Cuttlefish can remember what, where, and when specific things happened - right up to their last few days of life, researchers have found.

The results, published today in the journal Proceedings of the Royal Society B, are the first evidence of an animal whose memory of specific events does not deteriorate with age.

Researchers from the University of Cambridge, the Marine Biological Laboratory in Woods Hole, Massachusetts, and the University of Caen, conducted memory tests on twenty-four common cuttlefish, Sepia officinalis. Half of these were 10-12 months old - not-quite adult, and the other half were in old age at 22-24 months - equivalent to humans in their 90s.

“Cuttlefish can remember what they ate, where and when, and use this to guide their feeding decisions in the future. What’s surprising is that they don’t lose this ability with age, despite showing other signs of ageing like loss of muscle function and appetite,” said Dr Alexandra Schnell in the University of Cambridge’s Department of Psychology, first author of the paper.

As humans age, we gradually lose the ability to remember experiences that happened at particular times and places – for example, what we had for dinner last Tuesday. This is termed ‘episodic memory’, and its decline is thought to be due to deterioration of a part of the brain called the hippocampus.

Cuttlefish do not have a hippocampus, and their brain structure is dramatically different to ours. The ‘vertical lobe’ of the cuttlefish brain is associated with learning and memory. This does not deteriorate until the last two to three days of the animal’s life, which the researchers say could explain why episodic-like memory is not affected by age in cuttlefish.

To conduct the experiment, the cuttlefish were first trained to approach a specific location in their tank marked with a black and white flag. Then they were trained to learn that two foods they commonly eat were available at specific flag-marked locations and after specific delays. At one spot, the flag was waved and a piece of king prawn, their less preferred food, was provided. Live grass shrimp, which they like more, was provided at a different spot where another flag was also waved - but only every three hours. This was repeated for four weeks.

Then the cuttlefishes’ recall of which food would be available, where, and when was tested. To make sure they hadn’t just learned a pattern, the two feeding locations were unique each day. All the cuttlefish - regardless of age - watched which food first appeared at each flag and used that to work out which feeding spot was best at each subsequent flag-waving. This suggests that episodic-like memory does not decline with age in cuttlefish, unlike in humans.

“The old cuttlefish were just as good as the younger ones in the memory task – in fact, many of the older ones did better in the test phase. We think this ability might help cuttlefish in the wild to remember who they mated with, so they don’t go back to the same partner,” said Schnell.

Cuttlefish only breed at the end of their life. By remembering who they mated with, where, and how long ago, the researchers think this helps the cuttlefish to spread their genes widely by mating with as many partners as possible. 

Cuttlefish have short lifespans – most live until around two years old – making them a good subject to test whether memory declines with age. Since it is impossible to test whether animals are consciously remembering things, the authors used the term ‘episodic-like memory’ to refer to the ability of cuttlefish to remember what, where and when specific things happened.

 

New prehistoric 'Hobbit' creature is among 3 discoveries suggesting rapid evolution of mammals after dinosaur extinction

New prehistoric ‘Hobbit’ creature is among three discoveries suggesting rapid evolution of mammals after dinosaur extinction
Left to right, Conacodon hettingeri, Miniconus jeanninae, Beornus honeyi. Credit: Banana Art Studio

Research published today in the peer-reviewed Journal of Systematic Palaeontology describes the discovery of three new species of ancient creatures from the dawn of modern mammals, and hints at rapid evolution immediately after the mass extinction of the dinosaurs.

These prehistoric mammals roamed North America during the earliest Paleocene Epoch, within just a few hundred thousand years of the Cretaceous-Paleogene boundary that wiped out the dinosaurs. Their discovery suggests mammals diversified more rapidly after the  than previously thought.

New-to-science, the creatures discovered are Miniconus jeanninae, Conacodon hettingeri, and Beornus honeyi. They differ in size—ranging up to a modern house cat, which is much larger than the mostly mouse to rat-sized mammals that lived before it alongside the dinosaurs in North America.

Each have a suite of unique dental features that differ from each other.

Beornus honeyi, in particular has been named in homage to The Hobbit character Beorn, due to the appearance of the inflated (puffy) molars (cheek teeth).

The new group belong to a diverse collection of placental mammals called archaic ungulates (or condylarths), primitive ancestors of today's hoofed mammals (eg, horses, elephants, cows, hippos).

Paleontologists from the University of Colorado in Boulder unearthed parts of lower jaw bones and teeth—which provide insights into the animals' identity, lifestyle and .

The three new  belong to the family Periptychidae that are distinguished from other 'condylarths' by their teeth, which have swollen premolars and unusual vertical enamel ridges. Researchers believe that they may have been omnivores because they evolved teeth that would have allowed them to grind up plants as well as meat, however this does not rule out them being exclusively herbivores.

The mass extinction that wiped out the non-avian dinosaurs 66 million years ago is generally acknowledged as the start of the 'Age of Mammals' because several types of  appeared for the first time immediately afterwards.

As lead author Madelaine Atteberry from the University of Colorado Geological Sciences Department in the USA explains, "When the dinosaurs went extinct, access to different foods and environments enabled mammals to flourish and diversify rapidly in their tooth anatomy and evolve larger body size. They clearly took advantage of this opportunity, as we can see from the radiation of new mammal species that took place in a relatively short amount of time following the mass extinction."

Atteberry and co-author Jaelyn Eberle, a curator in the Museum of Natural History and Professor of Geological Sciences at the University of Colorado, studied the teeth and lower jaw bones of 29 fossil 'condylarth' species to determine the anatomical differences between the species, and used phylogenetic techniques to understand how the species are related to each other and to other early Paleocene 'condylarths' in the western United States.

The evidence supports the discovery of these three new species to science.

About the size of a marmot or house cat, Beornus honeyi was the largest; Conacodon hettingeri is similar to other species of Conacodon, but differs in the morphology of its last molar, while Miniconus jeanninae is similar in size to other small, earliest Paleocene 'condylarths', but is distinguished by a tiny cusp on its molars called a parastylid.

"Previous studies suggest that in the first few hundred thousand years after the dinosaur extinction (what is known in North America as the early Puercan) there was relatively low mammal species diversity across the Western Interior of North America, but the discovery of three new species in the Great Divide Basin suggests rapid diversification following the extinction," says Atteberry. "These new periptychid 'condylarths' make up just a small percentage of the more than 420 mammalian fossils uncovered at this site. We haven't yet fully captured the extent of mammalian diversity in the earliest Paleocene, and predict that several more  will be described."

Ankle and foot evolution gave mammals a leg up

More information: Madelaine R. Atteberry et al, New earliest Paleocene (Puercan) periptychid 'condylarths' from the Great Divide Basin, Wyoming, USA, Journal of Systematic Palaeontology (2021). DOI: 10.1080/14772019.2021.1924301

Journal information: Journal of Systematic Palaeontology 

Provided by Taylor & Francis 

UPDATES
Two New Species of Dinosaurs Discovered In China; First of their Kind to Be Unearthed In the Region [Study]

An international team of researchers announced the discovery of new dinosaur species at the Hami Pterosaur Fauna in China, and have been dated to the Early Cretaceous period (around 130 to 120 million years ago).


By Jeevan Biswas
August 15, 2021 



Despite going extinct millions of years ago, dinosaurs command the admiration of human beings. At least for most millennials, Jurassic Park played a role in it. And the discovery of a new dinosaur every now and then continues to keep the excitement alive. Now, scientists have reported the discovery of not one but three new species in Northwest China, two of which are giants.

In a new international study, researchers announced the unearthing fossils of three new dinosaur species at the Hami Pterosaur Fauna in China. Of these, two have been christened Silutitan sinensis and Hamititan xinjiangensi, and have been dated to the Early Cretaceous period (around 130 to 120 million years ago). They are believed to be the first non-pterosaur vertebrates discovered in the area.


"These dinosaurs are the first vertebrates reported in this region, increasing the diversity of the fauna as well as the information on Chinese sauropods, further supporting a widespread diversification of somphospondylans during the Early Cretaceous of Asia," the authors wrote.

First Non-Pterosaurs In the Area

Artistic rendering of the palaeoecology of the Hami Pterosaur Fauna, with Silutitan sinensis on the left and Hamititan xinjiangensis on the right
ZHAO CHUANG AND WANG XIAOLIN


The newly identified species are the first vertebrates that are not pterosaurs to be unearthed at the Early Cretaceous Hami Pterosaur Fauna, China. It is the largest locality in the world with pterosaur fossils, and also the most abundant. Several three-dimensionally preserved male and female pterosaurs, and pterosaur eggs, have been uncovered in this area. The three specimens were located around 2-5 km away from each other.

Both the new species are said to belong to a subgroup or clade of dinosaurs known as Sauropoda (particularly within the clade Somphospondyli), whose members are called sauropods. The popular Brachiosaurus from the Jurassic Park franchise is an example of a sauropod. Along with the distinctive tails and large bodies, they were also known to have small heads and thick column-like legs. They are considered to be among the largest land-living animals to have existed, who reached lengths of 5m-40m (16ft-135ft) and weights of up to 70 tons (around 64,000 kgs).

Massive Sauropods Identified

Holotype of Silutitan sinensis gen. et sp. novIVPP


The first newly identified species was named Silutitan sinensis. A joined series of six cervical vertebrae—from the 10th to 15th was preserved in the discovered specimen. Each of the vertebras was between 455–540 mm in length. It was observed that some of the features of its neck vertebrate suggested that it is from a family of sauropods called Euhelopodidae.

All known euhelopodids have been discovered only in Asia so far, particularly in East Asia. The specimen was compared to other dinosaurs that the authors believe were a closely related group, or from the genus Euhelopus. They approximated that this specimen's length was originally over 20 m (65ft). An incomplete lower jaw belonging to a pterosaur, Hamipterus tianshanensis, was found along with the Silutitan sinensis specimen.


Holotype of Hamititan xinjiangensis gen. et sp. nov.IVPP


Also identified as a new species, the second specimen was christened Hamititan xinjiangensis. The recovered specimen consisted of seven vertebrae from the tail. According to the team, they could be from the fourth to tenth within the spine. Each of the vertebras was between 210–320 in length. Based on the shape and the ridges across vertebrae, the scientists conclude that it belonged to a family of sauropods called Titanosaurs.

Dinosaurs from the clade Titanosauria are known to have been abundant in Asia and South America. The authors estimated that this specimen was around 17m (55ft) in length. They arrived at the conclusion by comparing it to dinosaurs from what they assume to be closely related genera, Opisthocoelicaudia and Rapetosaurus.

Insights Into Reptilian Diversity


All specimens described in this paper shown in one outline of a generic titanosaur: preserved cervical elements of Silutitan sinensis gen. et sp. nov. (IVPP V27874) (red), preserved caudal elements of Hamititan xinjiangensis gen. et sp. nov. (HM V22) (yellow) and the preserved sacral elements (IVPP V27875) (green).MAURÍLIO OLIVEIRA


While not christened yet, the third specimen—only known as IVPP V27875—was also considered a new species. However, it consisted of four vertebrae and rib fragments. Based on their analysis, the authors suggest that it could also be a member of the clade Somphospondyli. Somphospondylan sauropods lived from the Late Jurassic period to the Late Cretaceous period (160.3 million years-, 66 million years ago).


Sacral vertebrae (IVPP V27875), in (A) dorsal view, showing the camellate internal tissue (cit) and, (B) in ventral view, showing the mediolaterally deep fossa (mlf) on the ventral surface. Scale bar: 10 cm
WANG, XIAOLIN, ET AL/ SCIENTIFIC REPORTS

The discovered specimens are of special significance as they are some of the first dinosaurs found in the Turpan-Hami Basin; thereby adding to the diversity of Mesozoic (252-66 million years ago) reptiles found in the area.

"The discovery of Silutitan sinensis and Hamititan xinjiangensis increased the sauropod diversity of Asia, particularly from an area where these vertebrates are not common. Silutitan sinensis is closely related to Euhelopus. The existence of a more inclusive clade of similar sauropods (Euhelopodidae) is still a matter of debate and pends on more detailed description of some putative euhelopodid," wrote the authors.


QUANTUM = MAGICK


Exploring ‘the most spooky, weird kind of science’

Alessandro Rossi applies quantum physics to the study of measurements in
a ‘mind-boggling’ marriage of disciplines.

Josie Glausiusz
WHERE I WORK
16 August 2021

Alessandro Rossi is a measurement fellow at the National Physical Laboratory in London and a senior lecturer and UKRI Future Leaders fellow at the University of Strathclyde in Glasgow, UK. Credit: Alecsandra Dragoi for Nature


In my work as a quantum engineer, I wear two hats. At the National Physical Laboratory (NPL) in London, where this photo was taken in April, I research quantum metrology, the scientific study of measurements based on quantum-physics principles. The instrument in this image is a dilution refrigerator, which allows us to cool our semiconductor quantum devices to 0.007 kelvin: that’s a fraction of a degree above absolute zero (−273.15 °C), a temperature that, in nature, exists nowhere in the Universe.

In experiments at the NPL, we clock the transfer of single electrons so accurately that I know exactly how many of them move in a unit of time. By controlling electrons one at a time in this refrigerator system, I can generate an electric current very, very precisely. This level of control is useful for my research at the University of Strathclyde in Glasgow, UK, where my colleagues and I are developing quantum computers using semiconductor technology. By moving electrons one at a time, we can transfer information between various parts of a semiconductor-based quantum computer.

Quantum computing uses quantum bits, or qubits, that can exist in different states simultaneously. This means that quantum computers can perform certain calculations exponentially faster than classical computers. They can also simulate chemical reactions, because they work on the same quantum principles that govern interactions between individual atoms and molecules.

The idea that something can be in two states or two places at the same time is counter-intuitive. I feel that I myself live a contradiction. I study quantum physics — the most unreliable, spooky, weird type of science — and apply it to metrology, which is supposed to be among the most reliable, precise and repeatable of disciplines. To think how these two things come together successfully is mind-boggling.

Nature 596, 454 (2021)

doi: https://doi.org/10.1038/d41586-021-02224-z
Earth rocks collected in 19th century hold clues to finding water on Mars


By Scott Dutfield 
SPACE.COM
about 12 hours ago

New research suggests that rocks on Mars could be holding water within them


The specimen of hydrohematite discovered by German mineralogist August Breithaupt in 1843. 
(Image credit: Andreas Massanek, TU Bergakademie, Freiberg, Germany)


Rocks found on Earth could hold clues on where to find water on Mars, according to new research from Penn State University.

On Earth, hematite is one of the most abundant minerals on its surface. It can be found in many different igneous, metamorphic and sedimentary rocks and due to a high iron content, it appears a vibrant red color. However, when Peter J. Heaney and doctoral student Si Athena Chen analyzed hematite samples gathered in the 19th century, they uncovered a watery secret within.

Initially, Chen was conducting experiments to artificially crystallize hematite, when she discovered an iron-poor compound. Chen took her findings to Heaney, who uncovered scholars from the mid-1800s that had also reported similar findings but whose work had been dismissed.

Related: Why is there so little water left on Mars?

Those 19th-century scientists, Rudolf Hermann and August Breithaupt, each reported separate discoveries of iron-poor hematite that contained water in the 1840s. Hermann called this discovery "turgite in 1844", while Breithaupt termed the mineral "hyrdohematite in 1847." However, in the early 1900s mineralogists using primitive versions of modern-day diagnostic tools rejected their findings.


Chen and Heaney gathered samples from Hermann and Breithaupts' original studies, which have been stored at the Smithsonian Institution, along with five from Penn State's Frederick Augustus Genth collection for re-examination.


After deciphering the chemical composition of the samples, using infrared spectroscopy, advanced X-ray diffraction and other methods, Chen discovered that the minerals were lacking in iron atoms, but instead included molecules of hydroxyl (a combination of hydrogen and oxygen), which translates to water being stored in the mineral.

But how does it help to find water on Mars?


The Mars Exploration Rover Opportunity snapped this image of hematite "blueberries" on Aug. 30, 2006. (Image credit: NASA/JPL-Caltech/Cornell/U.S. Geological Survey)

Back in 2004, on NASA’s Opportunity rover discovered mineral concretions affectionately called "blueberries." These rounded rocks were identified by the rovers on-board X-ray diffraction device, as hematite. What the rover couldn’t do was decipher the iron content of the hematite to establish if it was anhydrous hematite (which lacks water) or possible hydrohematite.

Chen's initial experiments were to identify the natural conditions that iron oxides are required to form hematite. She discovered that at temperatures lower than 300 degrees Fahrenheit (nearly 149 degrees Celsius) and in a watery alkaline environment hydrohematite precipitates into sedimentary layers. "Much of Mars' surface apparently originated when the surface was wetter and iron oxides precipitated from that water," Heaney said in a statement.

Water on Mars: Martian Discovery Explained (Infographic)

Heaney also believes the shape of the "blueberries" also offers some clarification. "On Earth, these spherical structures are hydrohematite, so it seems reasonable to me to speculate that the bright red pebbles on Mars are hydrohematite," Heaney said in a statement.

Chen and Heaney's work is detailed in the journal Geology, where they conclude "hydrohematite is common in low-temperature occurrences of iron oxide on Earth, and by extension it may inventory large quantities of water in apparently arid planetary environments, such as the surface of Mars."


Life on Earth Arose Multiple Times and in Multiple Ways, New Theory Says

Aug 17, 2021 by News Staff / Source

In a new theoretical paper, researchers from the Santa Fe Institute provide a new perspective on the origin of life by arguing that life has emerged many times on Earth and that there are many forms of extant life coexisting on a variety of physical substrate; to help explain this position, they organize theories of life into three dominant perspectives: extant centric, history centric, and principle centric.

Kempes & Krakauer argue for multiple forms of life realized through multiple different historical pathways. Image credit: Hadeano.

In their three-layered frame, Santa Fe Institute’s Dr. Chris Kempes and Dr. David Krakauer call for researchers to consider:

(i) the full space of materials in which life could be possible;

(ii) the constraints that limit the Universe of possible life;

and (iii) the optimization processes that drive adaptation.

In general, the team’s framework considers life as adaptive information and adopts the analogy of computation to capture the processes central to life.

“Several significant possibilities emerge when we consider life within the new framework,” Dr. Krakauer said.

“First, life originates multiple times. Some apparent adaptations are actually a new form of life, not just an adaptation. And it takes a far broader range of forms than conventional definitions allow.”

According to the authors, culture, computation, and forests are all forms of life in this frame.

“Human culture lives on the material of minds, much like multicellular organisms live on the material of single-celled organisms,” Dr. Kempes said.

“When we focus on the life traits of single organisms, we often neglect the extent to which organisms’ lives depend upon entire ecosystems as their fundamental material, and also ignore the ways that a life system may be more or less living.”

Within the team’s framework, by contrast, another implication appears: life becomes a continuum rather than a binary phenomenon.

By taking a broader view of life’s principles, the scientists hope to generate more fertile theories for studying life.

“With clearer principles for finding life forms, and a new range of possible life forms that emerges from new principles, we’ll not only clarify what life is,” Dr. Krakauer said.

“We’ll also be better equipped to build devices to find life, to create it in labs, and to recognize to what degree the life we see is living,” Dr. Kempes added.

Their paper was published in the Journal of Molecular Evolution.

_____

C.P. Kempes & D.C. Krakauer. 2021. The Multiple Paths to Multiple Life. J Mol Evol 89, 415-426; doi: 10.1007/s00239-021-10016-2

 

Bee flight suffers under temperature extremes

Bee flight suffers under temperature extremes
A bumblebee attached to a flight mill. Credit: Daniel Kenna / Imperial College London

Rising temperatures could help some northern-latitude bees fly better, but more frequent extreme weather events could push them past their limits.

Bees'  affects their ability to pollinate plants—a crucial service for many of our crops. Now, researchers from Imperial College London have measured the relationship between bumblebee  performance and surrounding .

Measuring the motivation of bumblebees to fly and their flight endurance, the team found performance rose rapidly from the lower tested limit of 12°C and peaked between 25-27°C. Beyond this, however, they found performance started to decline.

Their results indicate that whilst bumblebees found in more northern latitudes may see benefits to flight performance under future climate warming, populations in southern latitudes, where temperatures above 27°C are more readily exceeded, may be adversely affected. The results are published today in Functional Ecology.

First author Daniel Kenna, from the Department of Life Sciences (Silwood Park) at Imperial, said: "Climate change is often thought of as being negative for bumblebee species, but depending on where in the world they are, our work suggests it is possible bumblebees will see benefits to aspects of an important behavior.

"However, more extreme weather events, such as cold snaps and the unprecedented heatwaves experienced in recent years, could consistently push temperatures beyond the comfortable flight range for certain species of bumblebees.

"These risks are particularly pertinent for 'fixed colony' pollinators like bumblebees, which cannot shift their position within a season if conditions become unfavorable, and potentially provide a further explanation as to why losses have been observed at species' southern range limits."

Like most flying insects, air temperature influences bees' body temperature, and body temperature influences flight activity. Too cold and their flight muscles can't function fast enough to support flight; too warm and they could overheat.

To measure how flight is determined by air temperature, the team temporarily attached bumblebees to 'flight mills', which allowed them to fly in circles like a carousel, capturing the distance and speed of flight. They tested bees ranging in  at temperatures from 12-30°C and used their results to construct a thermal performance curve (TPC).

This TPC predicts that whilst bumblebees can fly around 3km at their thermal optimum, this average flight distance could be reduced to under 1km when temperatures rise to 35°C, and could plummet to just a few hundred meters at a chilly 10°C.

At temperatures of 15°C and below, the team observed that bees were demotivated to fly and frequently would not fly past 100m. Moreover, it was only the bigger sized bees that successfully flew at these low temperatures, suggesting smaller individuals dislike cold days but may benefit more from climate warming.

Lead researcher Dr. Richard Gill, from the Department of Life Sciences (Silwood Park) at Imperial, said: "While we still need to understand how these findings translate to factors like foraging return to colonies and pollination provision, as well as applicability to other bumblebee species, the results can help us understand how smaller versus larger flying insects will respond to future .

"It's not just pollination: how different flying insects respond to warming temperatures could also affect the spread of insect-borne diseases and agricultural pest outbreaks that threaten food systems. Applying our experimental setup and findings to other species can help us to understand future insect trends important for managing service delivery or pest control methods."

The team are looking to expand this research to understand how climate warming and extreme weather events can influence the impacts of other stressors, such as pesticide exposure. They are also looking at how the impacts of warming can affect pollination delivery across different types of landscapes.

"Thermal flight performance reveals impact of warming on  foraging potential" by Daniel Kenna, Samraat Pawar & Richard J. Gill is published in Functional Ecology.Pesticide exposure causes bumblebee flight to fall short

More information: Daniel Kenna et al, Thermal flight performance reveals impact of warming on bumblebee foraging potential, Functional Ecology (2021). DOI: 10.1111/1365-2435.1388

Journal information: Functional Ecology 

Provided by Imperial College London