Connect with us

News desk

Rapid scale-up of CO2 removal crucial for climate goals

Published

on

Carbon-removing technologies, such as the direct air capture offered by Climeworks (pictured) have moved to the forefront of climate discussions
Share this:

Capping global warming at liveable levels will be impossible without massively scaling up the extraction of planet-warming carbon dioxide from the atmosphere, the first global assessment of CO2 removal warned Thursday.

The persistent failure to draw down greenhouse gas emissions — nearly 60 billion tonnes a year of CO2 or its equivalent — has forced once-marginal carbon dioxide removal (CDR) options toward centre stage in climate policy, investment and research.

Across methods ranging from tree planting to factory-sized machines that suck CO2 from the air and store it underground, CDR worldwide currently captures two billion tonnes of the gas each year, according to the State of Carbon Dioxide Report.

More than 99 percent is extracted through “conventional” techniques such as restoring and expanding CO2-absorbing forests and wetlands. 

Only a tiny fraction — about 0.1 percent — is removed by “novel” technologies such as direct air capture, converting organic waste into rock-like biochar, or capturing the CO2 from plants grown and burned for fuel, more than two dozen experts concluded.

The UN’s climate science advisory body, the IPCC, has said carbon emissions must decline some 45 percent compared to 2020 levels by the end of this decade, and to net zero by mid-century, if Paris Agreement goals are to be met. 

The 2015 treaty enjoins nations to hold warming to “well below” two degrees Celsius compared to preindustrial levels. The IPCC later concluded that only the agreement’s aspirational 1.5C target could prevent severe, and potentially catastrophic, climate impacts. 

“Regardless of whether we do a little or a lot of carbon dioxide removal, we will still have to do massive reductions in greenhouse gas emissions,” report co-author Gregory Nemet, a professor at the University of Wisconsin–Madison, told AFP.

But CO2 emissions in 2022 remained at near-record levels, thrusting CDR into an even more critical role.

By the end of the century, the report calculates for the first time, CDR must extract between 450 billion and 1.1 trillion tonnes of CO2.  

The new report says that conventional, tree-planting CDR — even if emissions do drop sharply — must double by 2050 to keep the 1.5C target in play, and increase by 50 percent to hold warming under 2C.

– Scaling up massively –

Research, however, has shown that food, energy and climate needs could result in competition for land, even with efficiency gains in each sector.      

A deeply changing climate with only 1.2C of warming to date could also limit potential.

“If warming continues — and all signs say it will — then it will be even harder to maintain current levels of conventional CDR because they will be affected by droughts, storms, pests and other impacts,” said co-author Oliver Geden, a senior fellow at the German Institute for International and Security Affairs and an IPCC lead author.   

That means novel CDR methods have to pick up the slack.   

To keep warming under 2C, deployment of these nascent technologies must be ramped up 30-fold by 2030, and by more than 1,000-fold by 2100, according to the report, led by the University of Oxford.

The 1.5C target would require scaling up even faster.

“Many policymakers don’t know — and probably don’t want to know — how much keeping the 1.5C narrative alive actually depends on carbon dioxide removal,” Geden told AFP.

One novel CDR technology has attracted more attention — and money — than any other, even if it has barely put a dent in global emissions: direct air capture combined with carbon storage (DACCS).

Three quarters of the $200 million (185 million euros) invested in new CDR capacity from 2020 to 2022 went to direct air capture — a big chunk of it to Switzerland-based Climeworks. The firm announced last week the world’s first certified CO2 removal and storage on behalf of paying clients, including Microsoft and software service company Stripe. 

“All this investment is based on the assumption that direct air capture can grow from about 10,000 tonnes today to a billion tonnes by 2050” — a 100,000-fold increase, said Nemet.

That rate of growth is not necessarily out of reach, he said.

In earlier research, Nemet compiled a database of 135 technologies that emerged over the last century, looking at how quickly they scaled up.

The growth rate for solar panels has been about 30 percent a year over 30 years, he found.

“Direct air capture needs to be more than 40 percent for the next 30 years,” he said. “It’s a huge challenge, but it’s not unprecedented.”

Share this:

News desk

‘Everybody is vulnerable’: Fake US school audio stokes AI alarm

Published

on

By

The fabricated audio clip of the Maryland school principal underscores the ease with which widely available AI and editing tools can be misused to impersonate celebrities and everyday citizens alike
Share this:

A fabricated audio clip of a US high school principal prompted a torrent of outrage, leaving him battling allegations of racism and anti-Semitism in a case that has sparked new alarm about AI manipulation.

Police charged a disgruntled staff member at the Maryland school with manufacturing the recording that surfaced in January — purportedly of principal Eric Eiswert ranting against Jews and “ungrateful Black kids” — using artificial intelligence.

The clip, which left administrators of Pikesville High School fielding a flood of angry calls and threats, underscores the ease with which widely available AI and editing tools can be misused to impersonate celebrities and everyday citizens alike.

In a year of major elections globally, including in the United States, the episode also demonstrates the perils of realistic deepfakes as the law plays catch-up.

“You need one image to put a person into a video, you need 30 seconds of audio to clone somebody’s voice,” Hany Farid, a digital forensics expert at the University of California, Berkeley, told AFP.

“There’s almost nothing you can do unless you hide under a rock.

“The threat vector has gone from the Joe Bidens and the Taylor Swifts of the world to high school principals, 15-year-olds, reporters, lawyers, bosses, grandmothers. Everybody is now vulnerable.”

After the official probe, the school’s athletic director, Dazhon Darien, 31, was arrested late last month over the clip.

Charging documents say staffers at Pikesville High School felt unsafe after the audio emerged. Teachers worried the campus was bugged with recording devices while abusive messages lit up Eiswert’s social media.

The “world would be a better place if you were on the other side of the dirt,” one X user wrote to Eiswert.

Eiswert, who did not respond to AFP’s request for comment, was placed on leave by the school and needed security at his home.

– ‘Damage’ – 

When the recording hit social media in January, boosted by a popular Instagram account whose posts drew thousands of comments, the crisis thrust the school into the national spotlight.

The audio was amplified by activist DeRay McKesson, who demanded Eiswert’s firing to his nearly one million followers on X. When the charges surfaced, he conceded he had been fooled.

“I continue to be concerned about the damage these actions have caused,” said Billy Burke, executive director of the union representing Eiswert, referring to the recording.

The manipulation comes as multiple US schools have struggled to contain AI-enabled deepfake pornography, leading to harassment of students amid a lack of federal legislation.

Scott Shellenberger, the Baltimore County state’s attorney, said in a press conference the Pikesville incident highlights the need to “bring the law up to date with the technology.”

His office is prosecuting Darien on four charges, including disturbing school activities.

– ‘A million principals’ –

Investigators tied the audio to the athletic director in part by connecting him to the email address that initially distributed it.

Police say the alleged smear-job came in retaliation for a probe Eiswert opened in December into whether Darien authorized an illegitimate payment to a coach who was also his roommate.

Darien made searches for AI tools via the school’s network before the audio came out, and he had been using “large language models,” according to the charging documents.

A University of Colorado professor who analyzed the audio for police concluded it “contained traces of AI-generated content with human editing after the fact.”

Investigators also consulted Farid, writing that the California expert found it was “manipulated, and multiple recordings were spliced together using unknown software.”

AI-generated content — and particularly audio, which experts say is particularly difficult to spot — sparked national alarm in January when a fake robocall posing as Biden urged New Hampshire residents not to vote in the state’s primary.

“It impacts everything from entire economies, to democracies, to the high school principal,” Farid said of the technology’s misuse.

Eiswert’s case has been a wake-up call in Pikesville, revealing how disinformation can roil even “a very tight-knit community,” said Parker Bratton, the school’s golf coach.

“There’s one president. There’s a million principals. People are like: ‘What does this mean for me? What are the potential consequences for me when someone just decides they want to end my career?'”

“We’re never going to be able to escape this story.”

Share this:
Continue Reading

News desk

TikTok reaches music licensing deal with Universal, ending feud

Published

on

By

The Universal-TikTok deal ends closely watched negotations that saw a breakdown earlier this year as two of the most powerful players in the music and tech industries publicly criticized each other as they jockeyed for leverage
Share this:

TikTok and Universal announced a new licensing agreement Thursday, ending a months-long dispute that saw popular music expunged from the social media platform.

The companies released a joint statement that said the new deal included “improved remuneration” for artists and songwriters under the Universal Music Group (UMG) umbrella, and will also assuage concerns over the growth of AI-generated content on TikTok.

Universal chairman Sir Lucian Grainge said “this new chapter in our relationship” would “drive innovation in fan engagement while advancing social music monetization.” 

The deal “focuses on the value of music, the primacy of human artistry and the welfare of the creative community,” he said.

TikTok’s CEO Shou Chew similarly said “we are committed to working together to drive value, discovery and promotion for all of UMG’s amazing artists and songwriters, and deepen their ability to grow, connect and engage with the TikTok community.”

The deal wraps up closely watched negotiations that saw a breakdown earlier this year, with the companies — two of the most powerful players in the music and tech industries — publicly criticizing each other as they jockeyed for leverage.

Universal — whose roster of artists includes Taylor Swift, Drake and Billie Eilish — ordered music from all artists connected to its vast publishing catalog to come down off the app, leaving many concerned over losing the marketing potential TikTok can offer.

Millions of videos involving Universal artists became muted on the platform.

But while the stripped music will now return to TikTok, it comes at a moment of uncertainty for the wildly popular video-sharing app, one week after a new US law demands the company divest from its Chinese parent company ByteDance or be shut out of the American market.

The app has 170 million users in the United States alone.

Neither Universal nor TikTok disclosed any financial terms of the deal.

Several weeks ago, the powerful and popular Swift returned some of her music to the app ahead of the release of her most recent album.

It was unclear exactly how she did it, but Swift does own her own master recordings as well as her songwriting rights, though those two are administered by Universal’s publishing arm.

In their joint statement the companies said they were “working expeditiously to return music by artists represented by Universal Music Group and songwriters represented by Universal Music Publishing Group to TikTok in due course.”

Share this:
Continue Reading

News desk

Changpeng Zhao, the ‘normal guy’ who conquered crypto

Published

on

By

Changpeng Zhao pleaded guilty to violating US anti-money laundering laws and agreed to step down as Binance CEO
Share this:

During his time at the helm of the world’s biggest cryptocurrency firm, former Binance boss Changpeng Zhao, who will be sentenced in the United States later Tuesday for money laundering, perfected the humble executive look.

At parties, on stages and in meetings, he was rarely seen without his black polo shirt, emblazoned with the insignia of his firm — complemented by the corporate logo tattooed on his arm.

It was vital to cement the myth of a boy who came from hardship in China and once flipped burgers for a living in Canada — before making a fortune still estimated in the tens of billions.

“I’m a small entrepreneur,” and a “normal guy”, the man known in crypto circles as “CZ” told AFP in 2022 when comparing himself to Elon Musk, whose buyout of Twitter (now X) Zhao later backed with $500 million.

Yet there was little normal about Zhao’s leadership of Binance, a company that largely cornered the crypto-trading market before careening into a slew of charges including sanctions busting and illegal trading. 

Zhao, who founded Binance in Shanghai in 2017, emerged as the most visible figure in crypto after his great rival Sam Bankman-Fried was arrested in 2022 for masterminding a giant Ponzi scheme.

During his rival’s downfall, Zhao was there to twist the knife, first suggesting he might buy FTX before very publicly withdrawing.

A year later, it was Zhao’s turn for contrition.

He pleaded guilty to violating US anti-money laundering laws and agreed to step down as Binance CEO, the authorities announcing later that the firm would pay a $4.3 billion settlement.

– True grit? –

The legal cases painted a picture of Zhao as a ruthless operator pursuing growth at all costs.

It was a far cry from the folksy legend he had fostered, which had become almost mythical in crypto circles.

Zhao’s early life in China was scarred by hardship when his parents were sent to the countryside for a dose of peasant reality — a common punishment for those suspected of having capitalist sympathies during the Cultural Revolution of the 1960s and 1970s.

They emigrated to Canada in the late 1980s, where young Zhao worked at a McDonald’s and a petrol station to help the family survive, according to his own account of his life and a blog from 2020 on the Binance website.

This instilled “drive, grit, and initiative” into the young man and helped to create a “crypto leader”, the Binance blog said.

Zhao’s nomadic childhood informed his adult life, which has seen him crop up everywhere from New York to Tokyo.

The official legend has it that he caught the bitcoin bug during a conversation around a poker table in Shanghai in 2013, starting Binance in the Chinese city a few years later.

Beijing’s crackdown on crypto hastened his departure from China and he began his voyage through various jurisdictions, establishing a raft of complicated corporate structures on his way.

For years, he kept regulators at arm’s length by refusing to commit to a single jurisdiction for Binance’s headquarters, repeatedly saying it was a “complex issue”.

The stance made him a popular figure among crypto purists who loathe any form of regulation.

– ‘Good old times’ –

But the whiff of scandal finally got too strong for US market regulators, who labelled Binance’s compliance regime a “sham” and accused Zhao of orchestrating a “secret plot” to help VIP customers evade the law.

Then the law enforcement authorities came knocking.

Among other complaints, they accused Binance of failing to stop payments to the Islamic State militant group and other banned organisations in Iran and North Korea.

Unlike Bankman-Fried, Zhao was quick to admit guilt and avoid a high-profile trial.

But prosecutors are asking the court in Seattle to dole out a three-year prison sentence to Zhao.

In response to his troubles, Zhao has fallen back on his everyman persona.

He launched a start-up in March called the Giggle Academy that he said would aim to bring free education to underprivileged children around the world.

“Start up mode all over again. Like good old times,” he wrote on X in early April, just weeks before he was due to be sentenced.

Among the subjects he is aiming to teach? Blockchain, AI and finance.

Share this:
Continue Reading

Featured