Friday, October 04, 2024

US dockworkers to head back to work after tentative deal


By AFP
October 3, 2024

An agreement between the International Longshoremen's Assocation (ILA) and the United States Maritime Alliance (USMX) extended operations at US ports until January 15, 2025, ending a three-day strike - Copyright AFP Mark Felix


Julie CHABANAS

US dockworkers will return to work after a three-day strike at East and Gulf Coast ports after the union and port operators reached a tentative deal on pay and extended the current contract to January 15, both sides said Thursday.

The International Longshoremen’s Association (ILA) had launched a work stoppage early Tuesday after negotiations with the United States Maritime Alliance (USMX), which represents shipping companies and terminal operators, came to an impasse.

The strike — which involved 45,000 workers, according to the ILA — paralyzed 36 ports from Maine to Texas, which handle an array of goods from food to electronics.

But Thursday evening, the two sides announced in a joint statement that they had “reached a tentative agreement on wages and have agreed to extend the Master Contract until January 15, 2025 to return to the bargaining table to negotiate all other outstanding issues.

“Effective immediately, all current job actions will cease and all work covered by the Master Contract will resume.”

The statement did not offer terms of the deal, but The Wall Street Journal, citing sources close to the matter, said USMX had proposed a 62 percent salary increase over six years, which allowed the deal to be reached.

The strike was the first walkout by the union since 1977 after negotiations stalled over union demands for significant wage increases and protection against automation-related job loss.

US President Joe Biden — who had been under pressure to intervene in negotiations to keep ports open, but had demurred citing respect for collective bargaining rights — celebrated the suspension of the strike late Thursday.

“I want to thank the union workers, the carriers, and the port operators for acting patriotically to reopen our ports and ensure the availability of critical supplies for Hurricane Helene recovery and rebuilding,” Biden said in a statement.

“Collective bargaining works, and it is critical to building a stronger economy from the middle out and the bottom up.”

Outside the White House, Biden added: “They’ve got the next 90 days, they are going to settle everything.”

Republican former president Donald Trump, who is seeking to take back the Oval Office, had blamed Biden for the crisis, saying Tuesday in Milwaukee: “He should have worked out a deal.”



– Crisis averted –



Analysts had cautioned that a lengthy strike could pose a major headwind to the US economy, leading to shortages of some items and lifting costs at a time when inflation has been moderating.

Oxford Economics had estimated that the strike would dent US gross domestic product by $4.5 billion to $7.5 billion per week, with the overall impact depending on how long the strike lasts.

But Capital Economics said fears about the economic impact of the strike were “overdone,” in part because recent shocks to the supply chain have made businesses more aware of the need to bake in precautionary measures.

The strike arrived at a politically precarious time, just one month before the US presidential election on November 5, but the tentative agreement relieves the political pressure.

US dockworkers return to ports after three-day strike

New York (AFP) – Thousands of dockworkers returned to work Friday, the day after a longshoremen's union reached a preliminary deal with shippers, ending a three-day strike weeks before the US presidential election.


Issued on: 04/10/2024 - 
A man walks along a pier in Bayonne as cranes are visible at Port Newark in New Jersey, on October 4, 2024, where a port strike ended © Bryan R. SMITH / AFP

At the Port of Mobile in the southern state of Alabama, on the Gulf Coast, terminal operator APM resumed operations at 7 am local time (1200 GMT), the company said online.

The Port of Virginia in Norfolk on the East Coast said it will reopen Saturday, planning "extended weekend gate hours" for terminal operators.

"We ask that our motor carrier partners be patient," the port said.

At the giant Port of New York and New Jersey, the second-largest container port in the United States after Los Angeles and Long Beach, the Port Liberty terminal in Bayonne plans to resume work on Monday morning.

The staggered reopening covers US ports from Maine to Texas following Thursday night's preliminary agreement between the International Longshoremen's Association (ILA) and the United States Maritime Alliance (USMX). Workers had walked out Tuesday morning with the expiration of their contract.

The parties "reached a tentative agreement on wages and have agreed to extend the Master Contract until January 15, 2025," said a joint statement.

"Effective immediately, all current job actions will cease and all work covered by the Master Contract will resume."

The strike was the first involving these ports since 1977.

Talks between the two sides had been dormant for months. But negotiations resumed Monday as the contract's expiration deadline approached.

In recent days, Acting Labor Secretary Julie Su and other Biden administration officials urged the parties to hash out differences and called on USMX to boost its offer.

Wage hikes

The stoppage involved some 45,000 workers at 36 facilities.

The contract pertained only to 14 large ports, including New York/New Jersey, Philadelphia, Boston, Savannah, Miami and Houston. However, additional workers at ILA-represented facilities in the region joined the stoppage.

The talks centered on wages and ILA efforts to prevent job loss due to automation. ILA leaders argued that a big wage hike was merited after dockworkers kept the economy running during the pandemic, boosting shipper profits.

Shipping containers at Port Newark in New Jersey, on October 4, 2024 where dockworkers are returning to work after a three-day strike © Bryan R. SMITH / AFP

The tentative agreement pertains to wages and extends the contract to January 15, 2025.

"The two sides have agreed to return to the bargaining table to negotiate all other outstanding issues," said the joint statement.

It did not offer terms of the deal, but The Wall Street Journal, citing sources close to the matter, said USMX had proposed a 62 percent salary increase over six years, allowing the deal to be reached.

US President Joe Biden had been under pressure to intervene in negotiations to keep ports open, but had demurred, citing respect for collective bargaining rights. He praised both sides for resolving the matter, citing the need to "ensure the availability of critical supplies for Hurricane Helene recovery and rebuilding," a White House statement said.

Outside the White House late Thursday, Biden said, "They've got the next 90 days, they are going to settle everything."

Analysts had cautioned that, with the November 5 presidential election nearing, a lengthy strike could have posed a major headwind to the US economy, leading to shortages of some items and lifting costs at a time when inflation has been moderating.

Shipping companies forced to reroute their vessels had planned to apply surcharges for each container: $1,000 each for German shipping company Hapag-Lloyd, and $800 to $1,500 for France's CMA CGM, according to German logistics platform Container xChange.

Oxford Economics said it doesn't plan to update its economic forecast in light of the quick resolution of the strike.

"The port strike ended fairly quickly, removing any significant downside risk to the economy this quarter," said the Oxford note.

"It will take a little time to work through any backlogs that developed during the strike, but any lost output that occurred during the strike will be made up through the remainder of this quarter, therefore no change to our forecast for Q4 GDP is needed."

© 2024 AFP


Dockers end three-day strike at Montreal port



By AFP
October 3, 2024


Dockworkers at the port of Montreal have ended a partial three-day strike as planned - Copyright AFP/File Sebastien ST-JEAN

Dockworkers at the port in Montreal, the second-largest in Canada, ended a partial three-day strike as scheduled on Thursday, officials confirmed, with both sides summoned to mediation.

The work stoppage by 320 dockers at two Montreal terminals came as tens of thousands of US longshoremen walked off the job this week at major East and Gulf Coast ports.

“The three-day strike is over,” Isabelle Pelletier, spokeswoman for the Maritime Employers Association, told AFP.

A federal mediator has summoned both sides to a meeting on Friday.

Each day of the Montreal strike put Can$91 million (US$67 million) worth of economic activity at risk, the port authority said.

It said Thursday that 11,500 containers had been blocked or delayed because of the strike, creating “supply chain backlogs, delivery delays and additional costs for businesses and consumers.”

A spokeswoman for the port authority, Renee Larouche, said it would work “to ensure a return to normal (operations) as quickly as possible.”

The port handles most of Canada’s container traffic with the European Union.

Transport Minister Anita Anand said this week that the port was “critical to our supply chains” and urged both sides to “return to the table and put in the work needed to get a deal done.”

Their last meeting to negotiate a collective agreement was on September 26.

Michael Murray of the Port of Montreal Longshoremen’s Union accused the employer of refusing “to come to the negotiating table to find solutions.”

Pelletier said the Maritime Employers Association is hoping for a “lasting agreement that takes into account reality in order to work collectively to bring stability and cargo back to Montreal.”

UK’s Starmer hails ‘landmark’ carbon capture funding


By AFP
October 4, 2024

The new investment will help fund "two carbon capture clusters" in the regions which have suffered from the decline of industry. - Copyright AFP/File Patrick T. FALLON

Prime Minister Keir Starmer on Friday said planned government investments of nearly £22 billion ($28.8 billion) in the capture and storage of carbon emissions marked a “landmark week” for Britain.

Starmer announced the £21.7 billion investment over 25 years to support three carbon capture projects in Teesside and Merseyside in northern England.

“It is a landmark week in our national story, because this week we saw the end of coal, the power that built this country for many years,” Starmer said, speaking in Chester, near Liverpool.

“Now… we see the new future on our horizon with carbon capture and storage, the largest programme in this new and vital industry anywhere in the world.”

Britain’s last coal-fired power station closed at the start of the week, boosting the country’s ambitions to become carbon neutral by 2050.

The new investment will help fund “two carbon capture clusters” in the regions which have suffered from industrial decline.

The government says it will attract another £8 billion in private investment.

Speaking at a glass factory, Starmer admitted the need for cleaner energy to meet UK climate goals while hoping the mitigate some of the pains accompanying energy transition.

“Decarbonisation does not mean deindustrialisation,” he said, assuring that “the timing is right” for the technology.

– Job creation –



The new Labour government has launched a flagship public-owned body, Great British Energy, to spur investment in renewable projects to meet net zero targets.

It hopes the carbon capture projects will create 4,000 jobs and support another 50,000 in the long term while removing 8.5 million tonnes of carbon emissions each year.

Carbon capture, utilisation and storage (CCUS) is a technology that seeks to prevent emissions created by burning fuels for energy and from industrial processes from releasing into the atmosphere.

The carbon is captured and then stored permanently in various underground environments.

According to Starmer, the UK continental shelf holds “a third of exploitable carbon storage space in all of Europe”.

The investment will also help fund transport and storage networks to move the carbon to geological storage in Liverpool Bay and the North Sea.

While the technology has been discussed in government for over a decade, the latest announcement will see the first carbon dioxide stored from 2028.



– ‘Global race’ –



The previous Conservative government had committed around £20 billion to be spent over 20 years on CCUS, however Starmer claimed that the Tories had not finalised any agreements or set money aside.

Accusing previous administrations of being “too slow” on the matter, Starmer reaffirmed that “carbon capture is a race that we can win”.

Citing similar moves across Europe and the United States, Starmer said developing carbon capture technology was a “global race”.

“This is a race, a global race… I am really pleased that we’re putting ourselves in a position not just to be in that global race, but to win”, he said.

Independent government advisers the Climate Change Committee welcomed the move as “very reassuring” on Thursday. The International Energy Agency considers the technology “critical” to achieving net zero.

However, environmental activists like Greenpeace UK criticised the plans as threatening to “extend the life of planet-heating oil and gas production.”

Last month, UK climate scientists wrote a letter to Energy Security Secretary Ed Miliband arguing that CCUS relies on “unproven technology”.

The letter warned that the plan would “lock the UK into using fossil fuel based energy generation to well past 2050”.

Civil society groups demand action against ‘sexist’ AI disinformation


By AFP
October 3, 2024

Global civil society groups say women and sexual minorities are disproportionately impacted by non-consensual AI content. - Copyright AFP Stefani REYNOLDS
Anuj CHOPRA

More than two dozen international civil society organizations will call on major tech firms to bolster their AI policies to combat “sexist and misogynistic” disinformation plaguing social media platforms, according to the draft of an open letter seen by AFP on Thursday.

The letter to the chief executives of six giants — Meta, X, YouTube, TikTok, Snapchat, and Reddit — follows an online boom in non-consensual deepfake porn as well as harassment and scams enabled by cheap, widely available artificial intelligence tools.

“It’s evident that these harms are not felt equally,” said the letter, signed by 27 digital and human rights organizations including UltraViolet, GLAAD, the National Organization for Women, and MyOwn Image.

“Specifically, women, trans people, and nonbinary people are uniquely at risk of experiencing adverse impacts of AI-based content on social media.”

The letter, which the groups said will be made public on Friday, made a dozen recommendations to strengthen AI policies.

Those include clearly defining the consequences for posting non-consensual explicit material — which should include suspension of repeat offenders — implementing a third-party tool to detect AI-generated visuals, and clear labelling of such content.

The groups also demanded a coherent procedure for users to flag and report harmful content and that platforms carry out comprehensive annual audits of its AI policies.

– Misogynistic, sexist attacks –

The letter comes barely a month before what is widely billed as America’s first AI election on November 5. The tight race to the White House has seen a firehose of disinformation.

A particular target of gendered disinformation is Democratic Party nominee Kamala Harris, which has included a flood of misogynistic and sexist narratives attacking the first Black, South Asian and woman vice president in US history.

“These harms silence us online, violate our right to control our own image, and distort our elections,” said Jenna Sherman, the campaign director at UltraViolet.

“But worse, they normalize and even algorithmically codify sexual exploitation and reinforce harmful stereotypes about gender, sexuality, and consent.”

The proliferation of non-consensual deepfakes is outpacing efforts to regulate the technology globally, experts say, with several photo apps digitally undressing women and manipulated images fueling “sextortion” rackets.

While celebrities such as singer Taylor Swift and actress Emma Watson have been victims of deepfake porn, experts say women not in the public eye are equally vulnerable.

“AI technologies have further facilitated the creation and spread of gender-based harassment and abuse online,” said Ellen Jacobs, senior US digital policy manager at the Institute for Strategic Dialogue, which was among the organizations that signed the letter.

“We need effective policies that specifically address the heightened risks to women, girls, and LGBTQ+ people.”

The platforms did not immediately respond to a request for comment ahead of the release of the letter.

“The world’s largest platforms have shown they are not equipped to handle the rise of AI-facilitated hate, harassment, and disinformation campaigns, including deepfakes and bots that can spew hate-based imagery at massive scale,” said Leanna Garfield, social media safety program manager at GLAAD.

The platforms “need to take concrete action now, so that everyone can feel safe online.”

Irish regulator to probe Ryanair use of facial recognition


By AFP
October 4, 2024

Ireland's data protection watchdog said Ryanair customers across the EU complained about the company's processing of personal data - Copyright AFP/File Patrick T. FALLON

Ireland’s data watchdog said Friday it will probe whether budget airline Ryanair’s use of facial recognition to check the identity of customers booking through third-party websites violates EU privacy laws.

The Data Protection Commission (DPC) — which also helps to police EU data privacy — said it had received complaints from Ryanair customers across the bloc about its processing of personal data, and said the probe would be EU-wide in scope.

The regulator said the complaints concerned the carrier’s practice of requesting additional identification verification from those booking travel tickets through third-party sites and online travel agents (OTAs), as opposed to directly with Ryanair.

“The DPC has received numerous complaints from Ryanair customers across the EU/EEA who after booking their flights were subsequently required to undergo a verification process,” DPC deputy commissioner Graham Doyle said in a statement.

“The verification methods used by Ryanair included the use of facial recognition technology using customers’ biometric data,” he said.

Doyle said the inquiry will consider whether Ryanair’s use of its verification methods complies with the EU’s General Data Protection Regulation (GDPR).

Ryanair said it “welcomes” the inquiry.

Its booking verification process “protects customers from those few remaining non-approved OTAs, who provide fake customer contact and payment details to cover up the fact that they are overcharging and scamming consumers,” said the low-cost airline in a statement.

“Customers who book through these unauthorised OTAs are required to complete a simple verification process (either biometric or a digital verification form) both of which fully comply with GDPR,” said Ryanair.

“This verification ensures that these passengers make the necessary security declarations and receive directly all safety and regulatory protocols required when travelling, as legally required,” it said.

A prominent digital privacy campaign group last year filed a complaint against Ryanair in Spain over the practice.

Austria’s NOYB (None Of Your Business) said there was “no reasonable justification” for the airline — Europe’s largest by passenger numbers — to implement the system.

NOYB said the complaint came from a customer from Spain who booked a Ryanair flight through the Barcelona-based online travel agency eDreams and then received an email from Ryanair requesting her to complete a “verification process”.

The case was filed with the Spanish Data Protection Agency (AEPD).

Currently, Ryanair offers three identification verification methods for its customers using third-party travel agents.

These include a so-called “Express Verification” option that uses facial recognition technology provided by an external company.

It also offers a longer “standard verification” option that can take up to a week, and “in-person verification” that can be completed at airport check-in desks before travel.

Google consumes more energy than 129 individual countries


By Dr. Tim Sandle
October 3, 2024
DIGITAL JOURNAL

Alphabet and Google CEO Sundar Pichai. — © AFP Sajjad HUSSAIN

Amid growing concerns about the environmental impact and long-term sustainability of technology firms’ global operations, a new review considers the electricity consumption of the world’s largest tech companies.

With the rapid advancement of artificial intelligence and the increasing energy demands of data centres, the technology industry’s power consumption is increasing. To put into perspective, the company BestBrokers has analysed the annual electricity consumption of the ten largest tech firms by market cap that publicly disclose such information.

The company next compared their power usage to that of entire countries, based on the latest U.S. Energy Information Administration data. They also looked at what else could be powered with the energy these firms use in a single year, including AI operations.

The findings reveal that a total of 129 countries and territories each consume less power per year than Google alone, which used 25,307 gigawatt-hours in its last fiscal year. Among them is Libya, which uses around 25,000 gigawatt-hours annually with a population of over 7 million people.

For further context, Google consumed 56 times more electricity last year to keep its global operations running than ChatGPT uses annually to handle user prompts. This estimate is based on ChatGPT’s 200 million weekly active users each making about 15 queries per week, with each query consuming roughly 2.9 watt-hours of electricity. Furthermore, ChatGPT consumes around 453.6 GWh of electricity every year to handle 156.4 billion prompts
.
Online businesses have been facing layoffs and even closures after Google’s upgrade caused catastrophic drops in traffic – Copyright AFP LOIC VENANCE

Samsung consumed 29,956 GWh of electricity across its global business sites in its last fiscal year. That’s nearly as much as the entire energy consumption of Ireland (5.2 million people) or Serbia (6.7 million people), each using around 31,000 GWh per year. Samsung also consumes more power than Ecuador (18.3 million people, 28,000 GWh) or Slovakia (5.6 million people, 26,000 GWh).

TSMC’s power consumption surpasses Azerbaijan’s yearly total of 24,000 gigawatt-hours, a nation of 10.7 million people. The energy needed by TSMC, the largest semiconductor maker in the world, reached 24,775 gigawatt-hours in 2023.

Microsoft’s power usage of 23,568 gigawatt-hours last year outpaced the entire electricity consumption of countries like Jordan (20,000 GWh, 11.2 million people), Iceland (19,000 GWh, 364 hundred people), Puerto Rico (18,000 GWh, 3 million people), or Croatia (17,000 GWh, 4.2 million people).

Facebook’s parent company Meta consumes 15,325 gigawatt-hours in 2023, more than Angola, Burma, Cuba, Sudan, or Zambia, each using roughly 15,000 gigawatt-hours annually.

China’s Tencent used 5,115 gigawatt-hours, about as much as Brunei (5,200 GWh, 491.9 hundred people). Tencent also exceeded the total electricity demands of Cyprus (5,000 GWh/year, 1.3 million people).

Apple consumed 3,487 gigawatt-hours in its last fiscal year, placing its energy needs on par with nations like Jamaica (3,400 GWh/year, 2.8 million people). The iPhone maker also required more electricity than countries like Montenegro (3,000 GWh/year, 599.8 hundred people) or Malta (2,800 GWh/year, 469.7 hundred people).

NVIDIA, with 613 gigawatt-hours of annual consumption, rivals countries such as Bermuda, Greenland, or the Seychelles (all of which use around 600 GWh per year).

ASML and Broadcom reported electricity usage of 480 and 417 gigawatt-hours respectively. This exceeds the annual energy demands of small island nations like Cabo Verde or Saint Lucia, each using 300 to 400 gigawatt-hours. Interestingly, ChatGPT consumes more power annually to generate responses than semiconductor giant Broadcom used for its global facilities in 2023.

Returning to the leader, Google, the firm consumed enough energy in its last fiscal year to charge 349.6 million electric vehicles or provide electricity to 2.4 million U.S. households for a full year. If Google were to use all of this electricity to mine Bitcoins, it could yield around 29,714 coins. On the AI front, the same amount of electricity could process 8.7 trillion ChatGPT prompts. For more details and the methodology behind our calculations, please check out the full report. You’re welcome to use any data or graphics, but please make sure to link back to the original work.

 

Five-mile asteroid impact crater below Atlantic captured in ‘exquisite’ detail by seismic data



Heriot-Watt University
Ship presentation 

image: 

Dr Uisdean Nicholson presenting his findings to scientists on board a drilling ship.

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Credit: Heriot-Watt University




New images of an asteroid impact crater buried deep below the floor of the Atlantic Ocean have been published by researchers at Heriot-Watt University.

The images confirm the 9km Nadir Crater, located 300m under the floor of the Atlantic Ocean, was caused by an asteroid smashing into Earth at the end of the Cretaceous period around 66 million years ago. 

That’s the same age as the dinosaur-killing 200 km wide, Chicxulub impact crater in Mexico. 

The images have helped the researchers determine what happened in the minutes following impact: the formation of an initial bowl-shaped crater, rocks turned to a fluid-like state and flowing upwards to the crater floor, the creation of a damage zone covering thousands of square kilometres beyond the crater, and an 800-metre-plus high tsunami that would have travelled across the Atlantic ocean. 

The findings are reported in Nature Communications Earth & Environment

66 million-year-old underwater imprint 

Dr Uisdean Nicholson of Heriot-Watt University discovered the Nadir Crater in 2022 when studying seismic reflection data of the Atlantic Ocean’s seabed, off the coast of Guinea in west Africa. 

The data revealed a depression over 8.5km wide, which Dr Nicholson suspected could be an asteroid impact crater. 

He worked with planetary scientists and geologists in the UK and the USA to classify the crater: the data suggested it was from an asteroid hundreds of metres wide hitting the planet around 66 million years ago, but they couldn’t state that definitively. 

Now they can. 

From a grainy ultrasound to a 3D image 

High-resolution, 3D seismic data was captured by TGS, a global geophysical company and shared with Dr Nicholson, a geologist. The data proves that an asteroid caused the Nadir Crater. 

Dr Nicholson said: “There are around 20 confirmed marine craters worldwide, and none of them has been captured in anything close to this level of detail. It’s exquisite. 

“Craters on the surface are usually heavily eroded and we can only see what is exposed, whereas craters on other planetary bodies usually only show the surface expression. 

“These data allow us to image this fully in three dimensions and peel back the layers of sedimentary rock to look at the crater at all levels.

“One way to understand it is to think about a pregnancy ultrasound. A few generations ago, the ultrasound would show a grainy blob. Now you can see the baby’s features in 3D, in incredible detail - including all the internal organs. 

“We’ve gone from 2D, fuzzy imaging to amazing high-resolution imaging of the Nadir Crater.” 

Data reveals minute-by-minute chaos after collision 

Dr Nicholson said: “The new images paint a picture of the catastrophic event. 

“We originally thought the asteroid would have been around 400m wide. We now think it was 450-500m wide, because of the larger crater size as shown by the 3D data. 

“We can tell it came from about 20-40 degrees to the northeast, because of spiralling thrust-generated ridges surrounding the crater's central peak - those are only formed following a low-angle oblique impact. 

“And we think it would have hit Earth at about 20 km per second, or 72,000 km per hour, although we still need to confirm this with a new set of impact models.” 

Using the data, the scientists created a timeline of what happened in the seconds and minutes after impact. 

Dr Nicholson said: “After the impact and the central uplift forming, the soft sediments surrounding the crater flowed inwards towards the evacuated crater floor, creating a visible ‘brim’. 

“The earthquake shaking caused by the impact appears to have liquefied the sediments below the seabed across the entire plateau, causing faults to form below the seabed. 

“The impact was also associated with large landslides as the plateau margin collapsed below the ocean. 

“As well as this, we see evidence for a train of tsunami waves going away from, then back towards the crater, with large resurge scars preserving evidence of this catastrophic event.” 

A natural laboratory for asteroid impact research 

Dr Nicholson points out that humans have never witnessed an asteroid of this size crashing into Earth. 

“The closest humans have come to seeing something like this is the 1908 Tunguska event, when a 50-metre asteroid entered Earth’s atmosphere and exploded in the skies above Siberia.” 

“The new 3D seismic data across the whole Nadir Crater is an unprecedented opportunity to test impact crater hypotheses, develop new models of crater formation in the marine environment and understand the consequences of such an event. 

“We’ve applied to IODP3, which is a new international drilling program, to drill into the seabed and recover cores from the crater. These will give us more information about the shock pressures experienced during impact, and the precise age and sequence of events that occurred after this event.”

Unlike the moon, Earth’s craters erode 

Collaborator Dr Sean Gulick of the University of Texas at Austin, USA, a geophysicist and expert on impact processes, noted: “3D seismic images of a fully-preserved impact crater are a fantastic research opportunity that can allow us to consider how impact processes and craters scale with the size of the impactor both for understand the evolution of the Earth, and other worlds.”

Collaborator Dr Veronica Bray of the University of Arizona, an expert in impact cratering across the solar system, commented: “We see pristine impact craters on airless bodies like the Moon, but don’t have subsurface structural information. 

“On the Earth, that is reversed:  we have structural data from seismics, field mapping and drill cores, but the craters are usually very eroded at the surface.  

“The new 3D seismic imaging of Nadir gives us both.  It’s a startlingly good look at an impact crater!”  

Could an asteroid this size hit Earth soon?

The rubble pile asteroid Bennu is around 400m in diameter. It is considered the most hazardous object in near-Earth orbit. According to NASA scientists, its total impact probability through the year 2300 is about 1 in 1,750 (or 0.057%). The researchers were also able to identify 24 September 2182 as the most significant single date in terms of a potential impact, with an impact probability of 1 in 2,700 (or about 0.037%)

 

New findings supply corrective to evolutionary hypothesis


Biological sciences researchers argue that statistical “noise” leads to perceived increase in evolutionary rates over short times scales



University of Arkansas

Jeremy Beaulieu 

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Jeremy Beaulieu

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Credit: University Relations





For decades, researchers have observed that rates of evolution seem to accelerate over short time periods – say five million years versus fifty million years. This broad pattern has suggested that “younger” groups of organisms, in evolutionary terms, have higher rates of speciation, extinction and body size evolution, among other differences from older ones. 

Evolutionary processes appear to operate at different time scales, perhaps necessitating the need for a new theory linking microevolution and macroevolution. The larger question has tantalized scientists: why?  

There are plausible explanations. A new species may inhabit a new island chain, allowing for more variation as it spreads into new niches. An asteroid may hit the earth, increasing extinction rates. Perhaps species evolve to an “optimal” trait value and then plateau.

A paper published in PLOS Computational Biology now proposes an entirely new explanation for understanding this evolutionary pattern: statistical “noise.”  The paper, “Noise leads to the perceived increase in evolutionary rates over short times scales,” was written by Brian C. O’Meara, a professor in the Department of Ecology and Evolutionary Biology at the University of Tennessee, and Jeremy M. Beaulieu, an associate professor of in the Department of Biological Sciences at the University of Arkansas.

The authors note that “by employing a novel statistical approach, we found that this time-independent noise, often overlooked as inconsequential, creates a misleading hyperbolic pattern, making it seem like evolutionary rates increase over shorter time frames when, in fact, they do not. In other words, our findings suggest that smaller, younger clades [groups with common ancestors] appear to evolve faster not due to intrinsic properties but because of statistical noise.”

The study blends math, statistics and biology to show that this long-held hyperbolic pattern is an anomaly because it doesn’t account for the fact that all species on earth are defined as much by their unique traits as the variation that exists in those traits. 

It’s a common principle in science that the simplest possible explanation to fit the data is usually the right one. Evolution taking place on completely different time scales is far less likely than noise in the numbers.

Ultimately, the study underscores the critical importance of accounting for inherent biases and errors in interpreting biodiversity patterns across both shallow and deep time scales.

In an unpublished summary of their work, the authors note that “[o]ur results might be seen as upsetting: a pattern that could have launched a thousand papers with really interesting biological hypotheses can be explained as an artifact. 

“However, this is actually progress – we have explained a common pattern we see in the world. Biology is rich in mysteries: actually answering one lets us move on to the next. There are still many questions about biological rates, but the current paradigm of plotting rates against time should probably end.”

 

Nebraska experts lead effort aimed at antimicrobial resistance in environment


One of four projects selected by EPA for funding



University of Nebraska-Lincoln

Husker Scientists at Elkhorn River in Nebraska 

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Xu Li (front left), Bing Wang (front right), Shannon Bartelt-Hunt (back left) and Yusong Li (back right) collect water samples from the Elkhorn River near Waterloo, Nebraska. They are leading an EPA research project on how antimicrobial resistance spreads through wastewater and agricultural runoff. 

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Credit: Craig Chandler|University Communication and Marketing | University of Nebraska-Lincoln




Aided by a $2.4 million grant from the Environmental Protection Agency, a team of University of Nebraska–Lincoln engineers and scientists is leading a multi-state effort to assess the potential threat to human health from antimicrobial-resistant pathogens spread via wastewater and agricultural runoff. 

“Traditionally and for good reason, public health experts have focused on clinical settings like hospitals and nursing homes, because that is where patients acquire resistant bacteria,” said Xu Li, the study’s principal investigator. “Now we are seeing that the environment could also be a pathway where people acquire those resistant pathogens — and that is why the EPA is stepping in to look at that.”   

Wastewater treatment plants are efficient in removing pollutants in domestic wastewater; however, they are also suspected to be a focal point for introducing antimicrobial-resistant bacteria and antimicrobial resistance genes into the environment via rivers and streams, said Li, who is the Dale Jacobson and Debra Leigh Professor of Environmental Engineering at Nebraska. 

Resistant bacteria find their way into wastewater treatment plants, and in turn into rivers and streams, via household use of medications and cleaning products, as well as by discharge from hospitals and antimicrobial manufacturing plants. Antimicrobial bacteria and genes also could be carried into river water through runoff from cropland fertilized with livestock manure or biosolids from wastewater treatment plants.  

In addition, antimicrobial resistant bacteria and resistance genes naturally occur in the environment. The EPA is interested in quantifying the antimicrobial resistant bacteria and resistance genes in surface water that are attributable to wastewater treatment plant effluent and biosolids.

Nebraska was one of four institutions awarded a total of $9 million by the EPA for research to address knowledge gaps and better identify and manage antimicrobial resistance risk. 

“Antimicrobial resistance is a major concern for public health and the environment,” said Chris Frey, assistant administrator for the EPA’s Office of Research and Development, when the awards were announced in late August. “The research conducted by these grantees will inform how wastewater treatment plants can help manage this risk as we work together to protect our water resources and public health.” 

Other Husker researchers involved in the EPA project are Yusong Li and Shannon Bartelt-Hunt, both environmental engineers, and Bing Wang, a veterinary microbiologist and food safety expert. 

They will partner with colleagues from Rutgers University, the University of Hawaii at Manoa, the University of California Riverside and Iowa State University to use field samples and modeling to determine the contributions from each source and develop a risk assessment tool to determine the potential threat to human health. 

During the three-year project, water samples will be collected from the Elkhorn River in Nebraska, the Raritan River in New Jersey, the Santa Ana River in California and the Hanalei River in Hawaii. Agricultural runoff will be monitored at a research farm in Nebraska. 

The selected rivers cover an array of environmental conditions and possible pollution sources, such as wastewater treatment facilities in Nebraska, New Jersey and California, combined sewer overflows in New Jersey, cesspools in Hawaii, animal agriculture in Nebraska and Hawaii, a hospital in New Jersey and a manufacturing plant in Nebraska. Water from the rivers is reused in a variety of ways: sources for drinking water, irrigation and recreation. 

The researchers will use shotgun metagenomic sequencing to identify the antimicrobial resistance genes present in their samples and track them to the sources. Li previously used the technique to successfully identify the major source of antimicrobial resistance genes in Antelope Creek, the stream at the heart of a major flood control and community revitalization project in central Lincoln. 

Environmental engineers with Iowa State University will assist in building models to more extensively predict how and where antimicrobial-resistant bacteria and genes will proliferate. 

The risk assessment tool will allow stakeholders to understand the threat to human health posed by antimicrobial-resistant bacteria and genes present in the rivers they use. By learning the sources of the contaminants, water managers and policymakers could be able to take action to reduce or mitigate human exposure. 

Many of the scientists and engineers involved in the EPA study have studied antimicrobial-resistant bacteria and genes for a decade or longer.

Yusong Li and Bartelt-Hunt previously worked with Xu Li to develop “fate and transport” models to determine how antimicrobial-resistant genes move through the soil. 

“This project will advance public safety by providing information on the risk of antimicrobial resistance from municipal wastewater and from land-applied biosolids," Bartelt-Hunt said. "It combines my research interests in the fate of emerging contaminants that primarily originate in agricultural and wastewater systems."

Yusong Li said she is excited to develop and calibrate a transport model to estimate antimicrobial-resistant bacteria and antimicrobial-resistance gene levels in runoff. 

“This will empower water managers to better assess the significance of antimicrobial resistance from land-applied biosolids,” she said. 

Wang is an expert in a risk assessment tool used for food-borne antimicrobial-resistant bacteria. 

By adapting risk assessment methodologies used in the food science to an environmental context, Wang said the project will open the door to innovative approaches tailored to environmental science. 

“This project will benefit wastewater managers and regulatory authorities by establishing a next-generation risk assessment framework for using surveillance data to assess and manage related human health risks,” she said. “Such a framework addresses critical gaps in our current understanding."

Xu Li also leads a new $900,000 project funded by the U.S. Department of Agriculture's National Institute of Food and Agriculture that will complement the EPA project. 

The USDA project takes what is known as a “One Health” approach to antimicrobial resistance, examining how it is transmitted between humans, other animals and the environment. Other leading Nebraska experts participating in the USDA project are Peter Iwen, director of the Nebraska Public Health Laboratory; Dustin Loy, director of the Nebraska Veterinary Diagnostic Center; Matt Hille, assistant professor in the School of Veterinary Medicine and Biomedical Sciences; and Galen Erickson, Nebraska Cattle Industry Professor of Animal Science. Amy Schmidt, a livestock bioenvironmental engineer and Extension specialist in animal science, will lead an outreach program to help livestock producers and consumers fight the spread of antimicrobial resistance.

 

How to design autonomous machines that are more reliable and less costly



An international team of computer scientists has developed a new method to reduce cost-safety tradeoffs.



University of Rochester




With millions of self-driving cars projected to be on the road in 2025 and autonomous drones generating billions in annual sales, safety and reliability are important considerations for consumers, manufacturers, and regulators. But solutions for protecting autonomous machine hardware and software from malfunctions, attacks, and other failures also increase costs. Those costs arise from performance features, energy consumption, weight, and the use of semiconductor chips.

Researchers from the University of Rochester, Georgia Tech, and the Shenzen Institute of Artificial Intelligence and Robotics for Society say that the existing tradeoff between overhead and protecting machines against vulnerabilities is due to a “one-size-fits-all” approach to protection. In a paper published in Communications of the ACM, the authors propose a new approach that adapts to varying levels of vulnerabilities within an autonomous machine system to make them more reliable and control costs.

Yuhao Zhu, an associate professor in Rochester’s Department of Computer Science, says one example of a current “one-size-fits-all” approach is Tesla’s use of two Full Self-Driving Chips (FSD Chips) in each vehicle—a redundancy that provides protection in case the first chip fails but doubles the cost of chips for the car. By contrast, Zhu says he and his students have taken a more comprehensive approach to protect against both hardware and software vulnerabilities and more wisely allocate protection.

“The basic idea is that you apply different protection strategies to different parts of the system,” says Zhu. “You can refine the approach based on the inherent characteristics of the software and hardware. We need to develop different protection strategies for the front end versus the back end of the software stack.”

For example, Zhu says the front end of an autonomous vehicle’s software stack is focused on sensing the environment through devices such as cameras and light detection and ranging (LiDAR), while the back end processes that information, plans the route, and sends commands to the actuator.

“You don’t have to spend a lot of the protection budget on the front end because it’s inherently fault tolerant,” says Zhu. “Meanwhile, the back end has few inherent protection strategies, but it’s critical to secure because it directly interfaces with the mechanical components of the vehicle.”

Zhu says examples of low-cost protection measures on the front end include software-based solutions such as filtering out anomalies in the data. For more heavy-duty protection schemes on the back end, he recommends things like checkpointing to periodically save the state of the entire machine or selectively making duplicates of critical modules on a chip.

Next Zhu says the team hopes to overcome vulnerabilities in the most recent autonomous machine software stacks, which are more heavily based on neural network artificial intelligence, often from end to end.

“Some of the most recent examples are one single, giant neural network deep learning model that takes sensing inputs, does a bunch of computation that nobody fully understands, and generates commands to the actuator,” says Zhu. “The advantage is that it greatly improves the average performance, but when it fails, you can’t pinpoint the failure to a particular module. It makes the common case better but the worst case worse, which we want to mitigate.”

The research was supported in part by the Semiconductor Research Corporation.

 

Green subsidies may have hidden costs, experts warn



Some subsidies that appear to encourage sustainability are not so simple



University of Connecticut




Government subsidies for business practices and processes should be approached with caution, even when they seem to be environmentally friendly, writes a group of scientists and economists in this week’s Policy Forum in the journal Science.

They argue that subsidies can alter market pressures, leading to unintended consequences that not only perpetuate harmful subsidies over time but also diminish the overall effectiveness of those intended to promote environmental sustainability.

Therefore, when they must be used, subsidies should have clear end-dates, advise the authors.

“We’ve got this odd juxtaposition of trying to get rid subsidies in some sectors, and then ramping up subsidies in others,” says lead author Kathleen Segerson, Board of Trustees Distinguished Professor of Economics at the University of Connecticut. “The question that interested me was: is this a good thing or a bad thing?”

Segerson and her coauthors are a group of internationally leading economists, ecologists, geographers, psychologists, and other scientists who convened for the 2022 Askö Workshop sponsored by the Beijer Institute for Ecological Economics in Stockholm, Sweden.

Subsidies can be powerful motivators that further environmental and sustainability goals, say the authors. For example, the United States’ Inflation Reduction Act of 2022 uses tax credits and incentives for things like electric vehicles (EVs), solar power, and wind power to meet its renewable energy and efficiency targets.

They can also be a politically easier approach to enacting change than creating new laws or taxes, says Segerson, and are even sometimes viewed as political capital, to ensure support from particular interest groups.

But some subsidies that appear to encourage sustainability are not so simple, the authors explain. Sometimes they can have negative spillover effects.

Take the case of EVs: Switching from gasoline-powered cars to EVs reduces greenhouse gas emissions. When subsidies for EVs and their technology create more inexpensive EVs, however, that market will expand, increasing overall vehicle use.

“When you’re subsidizing any industry, you’re essentially promoting that industry,” says Segerson.

But if subsidies instead went to increased infrastructure for and access to public transportation, more people might get rid of their cars, making the net positive environmental impact much greater.

“A subsidy that might have initially been viewed as beneficial for society might eventually be recognized as having costs that greatly exceed benefits,” the authors write.

Many subsidies in place for decades have long been identified by economists and environmentalists alike as actively contributing to climate change and biodiversity threats.

The authors cite that U.S. agricultural input subsidies have been shown to drive 17% of nitrogen pollution, while production subsidies account for 14% of global deforestation. In 2018, nearly 70% of $35.4 billion in fishing subsidies went to increasing fishing capacity through aid like fuel purchases, capital investment, and infrastructure, all of which contribute to overfishing.

Despite the leaders of the G20 committing to phasing out inefficient fossil fuel subsidies more than a decade ago, some sources estimate that there were still $1.3 trillion in global fossil fuel subsidies in 2022, owing to the considerable vested interest and political pressure from benefiting corporations to keep them in place.

In the United States, the Biden administration has tried repeatedly to repeal tax breaks for fossil fuels but hasn’t succeeded, leading a New York Times article to call the subsidies “zombies of the tax code: impossible to kill.

From an economic efficiency perspective, it’s better to tax activities that generate negative effects, such as a carbon tax, says Segerson—but they are a hard sell.

“Environmental taxes are very difficult to get passed, so you’d rather have the subsidy than nothing,” she says.

Subsidies that reduce negative environmental impacts are therefore a second-best solution, she says. Imposing time limits is of great importance to ensure the subsidies that are the best we can do now can be removed when something better is possible.

“We can subsidize these greener production processes, but cautiously, and recognizing that we don’t want to have a reliance on these subsidies over the long term,” says Segerson.