Tuesday, September 28, 2021

Mexican communities manage their local forests, generating benefits for humans, trees and wildlife

Mexican communities manage their local forests, generating benefits for humans, trees and wildlife
Jungle near the Palenque ruins, Chiapas, Mexico. Credit: Lawrence Murray/FlickrCC BY

The United Nations is preparing to host pivotal conferences in the coming months on two global crises: climate change and biodiversity loss. As experts have pointed out, these issues are fundamentally, inescapably intertwined. In both cases, human activities are harming nature and the support it provides to people.

But that connection also is an opportunity. Protecting places that are both carbon- and species-rich can help slow climate change and biodiversity loss at the same time. For example, in a June 2021 report, U.N. biodiversity experts urged nations to establish strict protected areas and govern forests through "locally adjusted sustainable management practices."

study Mexican community forests, and believe they are the world's best model of local sustainable management. My research over 30 years has shown that when Indigenous and  control their forests for commercial timber production, both humans and the land benefit.

As I write in my book, "Mexico's Community Forest Enterprises: Success on the Commons and the Seeds of a Good Anthropocene," these forests provide hope for a better future than the one now bearing down on us.

Mexico's sustainability model

Mexico is one of the most biodiverse countries in the world. Much of that life depends on its 165 million acres (65 million hectares) of forests, which cover about one-third of the nation's land area.

Mexican communities manage their local forests, generating benefits for humans, trees and wildlife
This 2014 image, derived from ground-based and satellite images, shows the amount of 
organic carbon stored in the trunks, limbs and leaves of trees in Mexico. The darkest 
greens reveal the areas with the densest, tallest and most robust forest growth. 
Credit: NASA Earth Observatory

Millions of monarch butterflies migrate from North America to forested hillsides in Mexico's Sierra Madre mountains every winter. Tropical forests in southern Mexico harbor jaguars, spider monkeys, crocodiles, anteaters and nearly 500 species of birds.

As a result of the 1911–1917 Mexican Revolution, ownership of around 60% of the nation's forests, totaling some 104 million acres (42 million hectares), was transferred to local communities. Over the following decades, reformers subsidized equipment and provided training in logging and business for the people who took over these important resources. Community members seized the opportunity.

This decades-long experiment, with  and market incentives, has produced surprising results. Today Mexican community  enterprises administer their common property woodlands at a scale and current maturity unparalleled anywhere else in the world.

Cutting down trees may seem like a counterintuitive way to slow climate change and species loss, but in Mexico it works. Community forest businesses sell profitable products like timber and bottled spring water. Some 1,600 communities sustainably log over 17 million acres of forest. They carefully select only certain trees for harvesting so that forests will vigorously regrow.

Measuring results

Research shows that Mexico's model supports conservation. One study of 733 municipalities in eight states found that deforestation rates were lower in managed forests with high percentages of commonly owned land. Community forests in the tropical state of Quintana Roo have lower  than public protected areas in southern Mexico, using logging practices that preserve habitat for wintering migratory birds.

Mexican communities manage their local forests, generating benefits for humans, trees and wildlife
A worker measures logs harvested from community forests in Durango. Credit: David Bray, CC-BY-ND

In the Sierra Norte of Oaxaca, 23 communities with a total area of over 500,000 acres have zoned their territory so that 78% of it is forested for sustainable production and conservation, leaving the remainder for agriculture and other uses.

The Sierra Norte community of Pueblos Mancomunados manages its 78,000 acres mostly as a community park focused on ecotourism. Foresters cut trees only to control bark beetle outbreaks. Zapotec Indigenous people have lived here for over 1,000 years, and residents have practiced sustainable logging for decades.

This region has some of the highest biodiversity in Mexico. New species are commonly discovered here, such as Charadrahyla esperancensis, a tree frog with a protruding snout.

Community forests reduce poverty

Over a 20-year period, from 1993 to 2013, the thickly forested landscape of Sierra Norte has also produced 3 million metric tons of timber and carbon, mostly stored in furniture and construction materials. By storing carbon in long-lasting products, sustainably managed forests actually capture more carbon than strictly conserved forests

These operations also benefit local economies. In a 2019 study, Mexican researcher Juan Manuel Torres-Rojo and colleagues found that in a sample of over 5,000 Mexican forest communities, government support for forestry, particularly for investments in social and human capital, significantly reduced poverty.

Mexican communities manage their local forests, generating benefits for humans, trees and wildlife
Charadrahyla esperancensis, a tree frog discovered in a cloud forest in Oaxaca in 2017. Credit: Canseco-Márquez, et al., 2017CC BY-ND

The most serious challenges confronting community forests are the impacts of organized crime. Gangs charge communities in several states protection money and reportedly have physically taken over community forest businesses in some northern states.

Illegal logging is also a serious problem, but it is concentrated in communities that are not managing their forests. Mexican community forests are less vulnerable to stresses like the deforestation, fire and drought that threaten large swaths of the Amazon basin because neighboring communities depend on their forests for their livelihoods and constantly monitor them.

Giving communities control helps land

Governments of developing countries often have little money to manage protected land. Giving communities control over valuable forests and the resources to manage them is an affordable alternative.

Mexico's community forests sustain themselves and generate profits. They do not depend on government subsidies, although they have received them over the years, as a pro-community forest public policy initiative. In my view, mobilizing community collective action around timber—a product that, unlike most small farmer crops, virtually always has a good price—is a market-oriented way to stop deforestation and conserve biodiversity.

However, many governments don't have the political will to give this kind of ownership, management authority, training and equipment to local communities. I believe that if the results achieved in Mexico were more widely known, they could help convince other governments that promoting community forestry can deliver political stability, poverty reduction and a more livable climate.

New research shows community forest management reduces both deforestation and povert
Provided by The Conversation 
This article is republished from The Conversation under a Creative Commons license. Read the original article.The Conversation

Great ape's consonant and vowel-like sounds travel over distance without losing meaning

Great ape’s consonant and vowel-like sounds travel over distance without losing meaning
An Orangutan. Credit: Madeleine E. Hardus

Scientists have shown that orangutan call signals believed to be closest to the precursors to human language, travel through forest over long distances without losing their meaning. This throws into question the accepted mathematical model on the evolution of human speech according to researchers from the University of Warwick.

The currently accepted , developed by mathematicians, predicts that  strung sounds together in their calls in order to increase their chances of carrying a signal's content to a recipient over distance. Because  degrades over larger distances, it is proposed that human ancestors started linking sounds together to effectively convey a package of information even if it is distorted.

Researchers from the University of Warwick's Department of Psychology set out to collect empirical data to investigate the model. They selected a range of sounds from previously collected audio recordings of orangutan communications. Specific consonant-like and vowel-like signals were played out and re-recorded across the rainforest at set distances of 25, 50, 75 and 100 meters. The quality and content of the signals received were analyzed. The results are revealed in the study "Orangutan information broadcast via consonant-like and vowel-like calls breaches mathematical models of linguistic evolution" published today in Biology Letters.

The team found that although the quality of the signal may have degraded, the content of the signal was still intact—even at long distance. In fact the informational characteristics of calls remained uncompromised until the signal became inaudible. This calls into question the existing and accepted theory of  development.

Dr. Adriano Lameira, an evolutionary psychologist from the University of Warwick, led the study. He said:

"We used our bank of audio data recordings from our studies of orangutan in Indonesia. We selected the clear vowel-like and consonant-like signals and played them out and re-recorded them over measured distances in a rainforest setting. The purpose of this study was to look at the signals themselves and understand how they behaved as a package of information. This study is neat because it is only across distance that you can hope to assess this error limit theory—it disregards other aspects of communication like gestures, postures, mannerisms and .

"The results show that these signals seem to be impervious to distance when it comes to encoding information.

"It calls into question the existing thinking based on the model set out 20 years ago by Harvard scientists. Their work assumes that the signals that our ancestors were using were reaching an error limit—a moment when a signal is received but stops being meaningful. They concluded that our ancestors linked sounds together to increase the chance of content traveling over .

"We know sound degrades the further away from the source you are. We have all experienced this effect when shouting for your relative or your friend. They don't hear all the words you say—but they recognize you are talking to them and that it is your voice. By using actual great ape communication sounds, which are the closest to those used by our hominid ancestors, we have shown that although the sound package is being distorted and pushed apart, the content remains unaltered. It's a call to the scientific community to start thinking again about how language evolved."

Dr. Adriano Lameira and his team used orangutan calls because they were the first species to diverge from the great ape lineage but are the only great ape which uses the vowel and consonant like sounds in a complex way—giving a parallel with human speech.

His research team is now moving on to deciphering the meaning of their calls. The research involves pulling together all the ways orangutan combine calls, putting the consonant and vowel sounds together to get meaning.

He said: "We still don't know what they are referring to, but right now what is completely clear is that the building blocks of language are present. Although other animal sounds and signals are complex, they are not using the same building blocks. We are focussed here on the building of language—exactly the component the great apes use. It gives us the parallel to .

"The Harvard model has been the accepted theory for years and if you ask a mathematician if language origins were still a puzzle they'd say no—but evolutionary psychologists are still working on it. But we haven't solved the puzzle either—if anything we have just gone deeper down the rabbit hole.

"We are proposing that mathematical models be applied to the real life data to see what we can come up with together."Voice control in orangutan gives clues to early human speech

More information: Orangutan information broadcast via consonant-like and vowel-like calls breaches mathematical models of linguistic evolution, Biology Letters, royalsocietypublishing.org/doi … .1098/rsbl.2021.0302
Journal information: Biology Letters 
Provided by University of Warwick 

China will no longer build overseas coal power plants, but what energy projects will it invest in instead?

China will no longer build overseas coal power plants – what energy projects will it invest in instead?
China’s overseas renewable energy portfolio has grown with the belt and road initiative.
 Credit: China's Global Power Database/Boston University, Author provided

Chinese President Xi Jinping recently announced at the UN General Assembly that China "will not build new coal-fired power projects abroad."

Chinese banks have already swung into gear. Three days after Xi's speech, the Bank of China declared it would no longer provide financing for new coal mining and power projects outside China from the last quarter of 2021.

Xi's statement is expected to affect at least 54 gigawatts of proposed China-backed coal plants that are not yet under construction. Shelving these would save CO₂ emissions equivalent to three months of global emissions.

This pledge from the world's largest public financier of overseas coal plants could usher in a new era of low-carbon development. But that depends on what happens in the countries where China had funneled money into coal power. Many of these places urgently need new  infrastructure. Will China's investments here be redirected to —or simply disappear?

Chinese support for renewables abroad

One positive sign came in the same speech to the UN, when Xi indicated that "China will step up support for other developing countries in developing green and low-carbon energy."

China's overseas energy investments grew as part of the belt and road initiative. Launched in 2013, Xi's signature foreign-policy effort increased China's cooperation with the rest of the world through infrastructure development, unimpeded trade, financial integration and policy coordination. China has continued to provide finance for the belt and road initiative during the pandemic, and investment in renewables made up most (57%) of the country's financial support for overseas energy projects in 2020—up from 38% in 2019.

Beijing has supported wind and solar projects in more than 20 developing countries since 2013, including Ethiopia and Kenya. And Chinese banks and companies have also expanded their overseas investments in renewable energy over the last decade.

While the trends are positive, challenges remain. China's overseas investment policy remains guided by the non-interference principle. This means that Beijing is supposed to let host countries determine the type of energy projects, and only requires Chinese firms to comply with host-country regulations.

Research shows that China's finance for coal in Asia was largely driven by demand in recipient countries. This is because the domestic policies of these countries prioritized improving energy access over reducing emissions, and coal was a cheap and proven source. Inadequate grid infrastructure and politicians skeptical of renewable energy in countries receiving Chinese investment have also hampered development. In Indonesia and politicians formed pro-coal lobby groups to influence the design of China-backed projects.

China's new pledge tells prospective recipient countries that coal finance is no longer an option. China must now promote its offer of  in renewables. Drawing on its domestic experiences, Beijing should provide subsidies or tax cuts to companies willing to build renewable energy projects outside China.

Chinese energy developers are often wary of investment risks in developing countries due to their unfamiliarity with local politics. The Chinese government can help by increasing coordination between Chinese companies and local governments, businesses, and communities in host countries.

Over the past decade, China has supported many developing countries to increase their energy generating capacity with financing, affordable technology and quick  delivery. China has taken the first step to stop funding . It's now time to adopt policies that support the overseas activities of its renewable energy developers.

China doubles down on coal plants abroad despite carbon pledge at home
Provided by The Conversation 
This article is republished from The Conversation under a Creative Commons license. Read the original article.The Conversation

Social media gives support to LGBTQ youth when in-person communities are lacking

lgbtq internet
Credit: Unsplash/CC0 Public Domain

Teens today have grown up on the internet, and social media has served as a space where LGBTQ youth in particular can develop their identities.

Scholarship about the online experiences of LGBTQ  has traditionally focused on cyberbullying. But understanding both the risks and the benefits of online support is key to helping LGBTQ youth thrive, both on- and offline.

I am a senior research scientist studying the benefits and challenges of teen social technology and digital media use. My colleagues, Rachel Hodes and Amanda Richer, and I recently conducted a study on the social media experiences of LGBTQ youth, and we found that online networks can provide critical resources for them to explore their identities and engage with others in the community.

Beyond cyberbullying

The increased risk of cyberbullying that LGBTQ youth face is well-documented. LGBTQ youth are almost three times more likely to be harassed online than their straight, cisgender peers. This can result in increased rates of depression and feelings of suicide: 56% of sexual minorities experience depression, and 35% experience  as a direct result of cyberbullying.

However, the digital landscape may be shifting.

Our 2019 survey of 1,033 children ages 10 to 16 found no difference between the amount of cyberbullying reported by straight versus sexual minority youth residing in a relatively progressive part of the U.S. known for legalizing gay marriage. Some  like Tumblr are considered a safer haven for sexual minorities than others, especially during the COVID-19 lockdown. This is despite past censorship of LGBTQ content on certain platforms due to biases in the algorithm.

LGBTQ youth tend to have smaller online social networks than their straight peers. We found that LGBTQ youth were significantly less likely than their straight peers to engage with their online friends. Conversely, LGBTQ youth are more likely to have friends they know only online, and to perceive these online friends as significantly more socially supportive than their in-person friends.

The LGBTQ youth we surveyed in our study were more likely to join an online group in order to reduce social isolation or feelings of loneliness, suggesting that they were able to reach out to and engage with social media networks outside of their in-person peer circles in supportive and fortifying ways.

Despite living in an area with higher levels of acceptance toward sexual minorities, our study participants felt a need to keep parts of their identities separate and hidden online. They were less likely than non-LGBTQ kids to be friends with family members online and more likely to join social media sites their parents would disapprove of. And about 39% said they had no one to talk to about their sexual orientation at all.

Not just surviving, but thriving online

Despite the risk of online harassment and isolation, social  can give LGBTQ youth space to explore their sexual identities and promote mental well-being.

In 2007, Australian researchers conducted one of the earliest studies on how internet communities serve as safe spaces for LGBTQ youth who face hostile environments at home. Their surveys of 958 youth ages 14 to 21 found that the anonymity and lack of geographic boundaries in digital spaces provide an ideal practice ground for coming out, engaging with a communal gay culture, experimenting with nonheterosexual intimacy and socializing with other LGBTQ youth.

The internet also provides critical resources about LGBTQ topics. LGBTQ youth may use online resources to educate themselves about sexual orientation and gender identity terminology, learn about gender transition and find LGBTQ spaces in their local community. The internet can also be a useful tool to identify LGBTQ-friendly physicians, therapists and other care providers.

Finally, online platforms can serve as springboards for LGBTQ activism. A 2013 report by the Gay, Lesbian & Straight Education Network surveying 1,960 LGBTQ youth ages 13 to 18 found that 77% had taken part in an online community supporting a social cause. While 68% of LGBTQ youth also volunteered in-person, 22% said they only felt comfortable getting involved online or via text. This signals that online spaces may be critical resources to foster civic engagement.

While  is not without its dangers, it can often serve as a tool for LGBTQ youth to build stronger connections to both their local and virtual communities, and communicate about social issues important to them.

LGBTQ+ youth face increased anxiety amid COVID-19 pandemic
Provided by The Conversation 
This article is republished from The Conversation under a Creative Commons license. Read the original article.The Conversation

Memetics and neural models of conspiracy theories

Memetics and neural models of conspiracy theories
Credit: Nicolaus Copernicus University in Torun

Multitude of conspiracy theories people believe in all over the world is astonishing. They actually accompany each significant event: a catastrophe, assassination, death of a famous person or, currently, the COVID-19 pandemic. Because the formation of a distorted image of reality is so widespread this topic has been dealt with by numerous scientists. Various studies, articles and books using psychological, sociological, political science, or anthropological approaches have been published. However, the presumed conspiracy theories mechanism is still a matter of speculations because the problem is scarcely researched by specialists in natural science.

Memes in the head

Professor Wlodzislaw Duch from the Department of Informatics at the Faculty of Physics, Astronomy and Informatics, NCU, (Torun, Poland) is an exception. For years, his scientific interests have been focused on artificial intelligence, , informatics, quantum physics as well as cognitive science. 10 years ago, he wrote his first report on memetics, conspiracy theories, representation of memes as neural network attractor states in the brain, linking it with the formation of conspiracy theories. His article entitled "Memetics and Neural Models of Conspiracy Theories", has just been published in Patterns.

"It is one of those long-lasting things in my professional life. I have tried to publish this work for so many years. Even though I indicated 10 potential reviewers, nobody felt competent enough to review it, and thus, journals rejected it," explains Prof. Duch. "The concept seemed too innovative. Moreover, it concerns the subtle processes taking place in the brain. Neuroscience experts prefer experiments on rats, so they have no chance to take a closer look at the subject of conspiracy theories. Computer models, in turn, are not concerned with subtle phenomena addressed by memetics."

Richard Dawkins is the originator of memetics. He used the word meme to name bits of information "inserted into the head," those which are rapidly embedded in the neural connections structure in the brain, and whose behavior is similar to that of genes.

"Memetics is thus the  of human behavior and provides a common paradigm for cultural studies, religious studies, sociology and other fields of social studies which describe our mental space. The main challenge it faces is the identification of memes, studying how they are reproduced, spread, and developed," explains Prof. Duch, "but, what is the meme from the physical, neuroscientific point of view? It has not been described so far."

Brain determinants

Why do people believe in conspiracy theories?

"Because this is how their brains function. We think the way our brains allow us to do," says Prof. Duch. "On the one hand, we are dealing with genetic determinism: human cognitive capacity and affective reactions are much varied and dependent on the presence of genes responsible for building individual brain structure, for example COMT, DARPP-32, DRD2—the genes connected with dopamine, an important neurotransmitter. Hence, genes determine personality, predispositions, skills, but not particular decisions."

On the other hand, genetic determinism only partially affects our neuronal determinism, namely, our brain formation resulting from our life experience, upbringing, culture, and religion.

"We cannot think differently than our neuronal activity allows," says Prof. Duch."The whole history of a given individual, his/her experience starting in the fetal stage, may influence easy activation of certain neurons in the brain whereas other neurons require strong stimulation in order to be activated. It would be interesting to find out how certain bits of information we receive are turned into memes and reproduced while others remain unnoticed."

The formation of biological and psychological mechanisms of false belief and thus conspiracy theories is obviously very complex. Accepting distorted images of reality can be a side effect of many different factors such as education or life experience, and this is why they are so difficult to study.

"Moreover, accepting simple explanations can be satisfactory; it saves energy (and the brain consumes huge amounts of it), brings a pleasant sense of understanding. In contrast, complex explanations require much effort and time to be fully understood. A simple, but false, explanation is thus attractive: it is always better than no explanation at all," explains Prof. Duch.

Sinks of false beliefs

In his article, Prof. Duch presents one of the possible mechanisms of conspiracy theories formation in the brain.

"Emotional excitement or uneasy situations induce temporarily higher neuroplasticity of the brain to make it memorize situations that affect us. After a traumatic situation a suddenly appearing explanationcan rapidly reduce the brain plasticity, 'freezing' false images," explains Prof. Duch. "All kinds of gossip becomes unambiguously associated with emotional experience. The flowing of new information is combined with the embedded traces of memory; it can self-organize to create memes attracting many accidental patterns of brain activation that represent memories and concepts. In neural networks such states are called attractors. On the mental level they appear as memes, with many accidental and false associations, destroying relationships between different states of memory. This model of formation of conspiracy beliefs can be called the rapid freezing of high neuroplasticity (RFHN)."

"We can now imagine that such condensation of conceptual framework starts to cause the association of the same trace of memory with completely unrelated observations," continues prof. Duch. "It is the model I tried to present in computer simulations: there appear states so condensed with conceptual framework that practically everything merges into one place. In the terminology of dynamic systems many attractor states form a 'sink'."

This is why struggling with conspiracy theories is so difficult. In the brains of those who believe in them (even if they hear an argument contradictory to what they think), memeplexes, i.e. complexes of memes related to a given topic, emerge.

"And when it emerges, it is also reinforced," says Prof. Duch. "In the brain neural network each excitation of memory reinforces its pattern of activation, causing stronger associations of different, even most distant, information. Such memory trace creates a 'basin of attraction' in our conceptual framework, and more and more thoughts and observations fall into this basin. It is a physical process. It is something that cannot be changed by simple persuasion. And the physical change of brain's connections is difficult because it requires highly energy-consuming processes."

Subtle processes

Prof. Duch admits that in the near future he does not consider performing experiments involving the human .

"Such experiments would be considered unethical because, to some extent, they would be based on confusing people's minds. It is also difficult to see subtle changes on the neuronal level with the current experimental techniques. Nevertheless, we have a range of sophisticated tools which may soon help us achieve more. The world is big and many good research teams continue their studies. I hope my work will inspire others to start investigations in this area," says Prof. Duch.

As the researcher from Torun emphasizes, the simulations he presents should attract attention to the need of analyzing the types of distortions which commonly appear in the neural networks. More complex neural models will be necessary to enable predictions comparable to results given by neuroimaging and behavioral experiments. But even such simple models can be applied to illustrate the presumed processes responsible for the formation of different  theories. The next step will be to perform more sophisticated simulations.Disagreeable people found to be more prone to conspiracy theories


More information: Włodzisław Duch, Memetics and neural models of conspiracy theories, Patterns (2021). DOI: 10.1016/j.patter.2021.100353
Provided by Nicolaus Copernicus University in Torun
Researchers develop a new robot that can efficiently navigate sidewalks in urban environments

by Ingrid Fadelli , Tech Xplore
SEPTEMBER 27, 2021 FEATURE
Robot autonomously navigating real-world obstacle track in the real world. Credit: Sorokin et al.

To operate efficiently in urban environments, mobile robots and other autonomous systems should be able to move safely on sidewalks and avoid collisions with pedestrians or other obstacles. This is particularly true for delivery robots or systems that are specifically programmed to patrol urban environments.


Researchers at Georgia Institute of Technology and Stanford University have recently developed AlienGo, a quadruped robot that can follow specific routes generated by public map services while remaining on sidewalks and avoiding collisions with obstacles or humans. This robot, presented in a paper pre-published on arXiv, is based on a new, highly performing two-staged learning framework for safe sidewalk navigation.

"As part of this project, we developed an intelligent quadrupedal robot that can navigate sidewalks in the real world," Sehoon Ha, one of the researchers who carried out the study, told TechXplore. "Our work is inspired by two stems of the existing work: Autonomous driving and indoor robot navigation. However, as outdoor sidewalk navigation typically takes place in unstructured environments with a wide variety of pedestrians and obstacles without any guide lanes, we also proposed a set of learning techniques and algorithms to solve these specific challenges."

Initially, the team trained an artificial neural network to navigate simple sidewalk environments in simulations. This first algorithm, dubbed the "expert," was trained using a high-speed salient world simulator and was given access to the so-called "privileged state" of the simulation.


Subsequently, this "expert" network transferred the behavior it learned to a "student" algorithm in a high-fidelity simulation. Ultimately, this "student" network produced realistic sensor observations that resembled real-world sidewalk images.

"The 'student' uses a custom-trained semantic feature network to generate abstractions that are later used to control the robot," Maks Sorokin, another researcher involved in the study, told TechXplore. "This approach is based on our experience that the desired behavior is hard to obtain using naive end-to-end training, simply because the problem is way too hard."

Using the two-stage learning framework they developed, Ha, Sorokin and their colleagues were able to attain an effective policy using "privileged' information in simulation and then transfer the behaviors acquired by the framework to a real four-legged robot. When the team evaluated the framework, they found that it outperformed other state-of-the-art models for sidewalk navigation. They then also tested their framework in a real-world setting, by applying it to the AlienGo robot as it navigated sidewalks in Atlanta.
Robot autonomously navigating various real-world sidewalks outdoors in the real world. Credit: Sorokin et al.

"In addition to performance gains from using two-stage learning with the abstract world, it was surprising to see how easy the transfer to the real world was with our data augmentation/data curation," Sorokin added. "Given that during training the robot has never seen any real-world sidewalk images and given all of the complexities of the real world, the performance without any adaptation was notable, to say the least. Our findings could imply that a lot of recent work robotics learning could be transferred to the real world, and hopefully practically used to benefit humanity."


In the future, the quadrupedal robot developed by this team of researchers could be used to complete a variety of tasks, such as delivering parcels or monitoring urban environments. In addition, the framework they developed could be applied to other existing or emerging mobile robots to improve their ability to move navigate sidewalks.

Robot autonomously navigating various real-world sidewalks outdoors in the real world. Credit: Sorokin et al.

"While we made a lot of progress in sim-to-real transfer for navigation, there are still many challenges remaining," Sorokin said. "Some of the challenges related to navigation that we still need to overcome include road crossing, dynamic obstacle handling, and interaction with real-world objects and humans, However, our approach is not limited to navigation, it could potentially be applied in many robotic applications, such as manipulation, locomotion, and others. We are excited to see its applications in adjacent research areas."

Jie Tan, one of the researchers in the team, currently works at Google, but the opinions expressed in this article do not represent Google's opinions.

Explore furtherA framework for indoor robot navigation among humans
More information: Learning to navigate sidewalks in outdoor environments. arXiv:2109.05603 [cs.RO]. arxiv.org/abs/2109.05603

initmaks.com/navigation

© 2021 Science X Network

Activision agrees to pay harassment victims in face of lawsuit

by Rob Golum

Credit: Dinosaur918, CC BY-SA 3.0

Activision Blizzard Inc., the videogame giant, agreed to create an $18 million fund for alleged victims of discrimination or harassment after it was sued by the U.S. Equal Employment Opportunity Commission over its workplace practices.

The company also announced in a statement Monday the creation of an initiative to develop software tools and training programs to improve workplace policies and practices for employers across the technology industry.

Activision Blizzard, which makes games like "Call of Duty" and "World of Warcraft," has been embroiled in controversy over its treatment of employees.

California's Department of Fair Employment and Housing sued Activision in July, alleging the company fostered a "frat boy" culture in which female employees were subjected to sexual harassment, pay inequality and retaliation. Days later, an employee walkout drew hundreds of demonstrators to the sidewalks of the company's corporate campus in Southern California.

Explore further US regulators target Activision Blizzard workplace

©2021 Bloomberg L.P.
Distributed by Tribune Content Agency, LLC.

SEPTEMBER 28, 2021
Higher price for CO2 lowers Europe's CO2 emissions during the pandemic
Fig. 1. History of implemented containment measures. Credit: DOI: 10.1016/j.enpol.2021.112392

Public life and economic activity was reduced to a minimum as part of measures to tackle the coronavirus pandemic, which changed the demand on the energy market. Energy consumption and CO2 emissions fell sharply to levels never seen before in times of peace. This reduction, however, was not constant in all regions, as CO2 emissions in Europe fell lower than those in other regions on the planet. Economists at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and in Switzerland have been investigating how the reduction in demand for energy affected CO2 emission levels in Europe.

During the entire lockdown, the demand for electricity fell by up to 19 percent and CO2 emissions even fell by 34 percent per hour. This data from 16 EU states and Great Britain was collected and evaluated for the time between January and March 2020. The researchers discovered significant differences. The drop in CO2 emissions in various countries varied greatly, depending on which source of energy suffered the drop in demand and how intense the 'demand shock' was.

The countries where the reduction in CO2 emissions was most noticeable were those whose energy supply heavily relies on coal. These include Poland and Great Britain, but also Germany. If the certificates that must be purchased for increased CO2 emissions are expensive, the drop in demand ensures that the more expensive 'dirty' electricity is replaced by alternative energy sources on the market. As the coronavirus pandemic spread across Europe at the beginning of last year, the price of these certificates was high and less electricity was being generated using coal, which led to a significant drop in CO2 emissions.

In countries without  for CO2, gas as a source of energy for electricity production was pushed out of the market. This resulted in a lower drop in CO2 emissions as gas produces less CO2 than coal. "Our research demonstrates that the reduction in emissions caused by a reduction in energy demand is significantly higher in cases where an appropriate price for CO2 is used than in cases where no CO2 pricing or low CO2 pricing is in place," explains Prof. Liebensteiner.

It is feasible that the reduction in CO2 emissions will only last for as long as it takes for the economy to recover from the pandemic, as was the case during the global financial crisis in 2009. Even though there was a reduction in , no structural changes have been made towards lower carbon content energy sources. The researchers have published their findings in the journal Energy Policy. "Our results demonstrate that a sufficiently high price for emissions would immediately increase the efficacy of measures to improve energy efficiency," says Prof. Liebensteiner. "In the long term, this could herald structural change in electricity supply by means of incentives for investments in technologies that produce fewer emissions."COVID-19 to cause record emissions fall in 2020: IEA

More information: Adhurim Haxhimusa et al, Effects of electricity demand reductions under a carbon pricing regime on emissions: lessons from COVID-19, Energy Policy (2021). DOI: 10.1016/j.enpol.2021.112392

Journal information: Energy Policy 

Provided by Friedrich–Alexander University Erlangen–Nurnberg