ІНСАЙДЕР УКРАЇНА

U.S. scientists have achieved net energy gain in a fusion reaction for the second time since December, the Lawrence Livermore National Laboratory said on Sunday.

Scientists at the California-based lab repeated the fusion ignition breakthrough in an experiment in the National Ignition Facility (NIF) on July 30 that produced a higher energy yield than in December, a Lawrence Livermore spokesperson said.

Final results are still being analyzed, the spokesperson added.

Lawrence Livermore achieved a net energy gain in a fusion experiment using lasers on Dec. 5, 2022. The scientists focused a laser on a target of fuel to fuse two light atoms into a denser one, releasing the energy.

That experiment briefly achieved what’s known as fusion ignition by generating 3.15 megajoules of energy output after the laser delivered 2.05 megajoules to the target, the Energy Department said.

In other words, it produced more energy from fusion than the laser energy used to drive it, the department said.

The Energy Department called it “a major scientific breakthrough decades in the making that will pave the way for advancements in national defense and the future of clean power.”

Scientists have known for about a century that fusion powers the sun and have pursued developing fusion on Earth for decades. Such a breakthrough could one day help curb climate change if companies can scale up the technology to a commercial level in the coming decades.
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Elon Musk said in a social media post that his proposed cage fight with Meta (META.O) CEO Mark Zuckerberg would be live-streamed on social media platform X, formerly known as Twitter. 

The social media moguls have been egging each other into a mixed martial arts cage match in Las Vegas since June.

“Zuck v Musk fight will be live-streamed on X. All proceeds will go to charity for veterans,” Musk said in a post on X early on Sunday morning, without giving any further details.

Earlier on Sunday, Musk had said on X that he was “lifting weights throughout the day, preparing for the fight”, adding that he did not have time to work out so brings the weights to work.

When a user on X asked Musk the point of the fight, Musk responded by saying “It’s a civilized form of war. Men love war.”

Meta did not respond to a Reuters request for comment on Musk’s post. 

The brouhaha began when Musk said in a June 20 post that he was “up for a cage match” with Zuckerberg, who is trained in jiujitsu.

A day later, Zuckerberg, 39, who has posted pictures of matches he has won on his company’s Instagram platform, asked Musk, 51, to “send location” for the proposed throwdown, to which Musk replied “Vegas Octagon”, referring to an events center where mixed martial arts (MMA) championship bouts are held.

Musk then said he would start training if the cage fight took shape. 
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The tidal wave of artificial intelligence (AI) barrelling toward many professions has generated deep anxiety among workers fearful that their jobs will be swept away — and the mental health impact is rising.

The launch in November 2022 of ChatGPT, the generative AI platform capable of handling complex tasks on command, marked a tech landmark as AI started to transform the workplace.

“Anything new and unknown is anxiety-producing,” Clare Gustavsson, a New York therapist whose patients have shared concerns about AI, told AFP.

“The technology is growing so fast, it is hard to gain sure footing.”

Legal assistants, programmers, accountants and financial advisors are among those professions feeling threatened by generative AI that can quickly create human-like prose, computer code, articles or expert insight.

Goldman Sachs analysts see generative AI impacting, if not eliminating, some 300 million jobs, according to a study published in March.

“I anticipate that my job will become obsolete within the next 10 years,” Eric, a bank teller, told AFP, declining to give his second name.

“I plan to change careers. The bank I work for is expanding AI research.”

Trying to ’embrace the unknown’

New York therapist Meris Powell told AFP of an entertainment professional worried about AI being used in film and television production — a threat to actors and screenwriters that is a flashpoint in strikes currently gripping Hollywood.

“It’s mainly people who are in creative fields who are at the forefront of that concern,” Gustavsson said.

AI is bringing with it a level of apprehension matched by climate change and the Covid-19 pandemic, she contended.

But she said that she tries to get patients to “embrace the unknown” and find ways to use new technology to their advantage.

For one graphic animator in New York, the career-threatening shock came from seeing images generated by AI-infused software such as Midjourney and Stable Diffusion that rivaled the quality of those created by humans.

“People started to realize that some of the skills they had developed and specialized in could possibly be replaced by AI,” she told AFP, adding she had honed her coding skills, but now feels even that has scant promise in an AI world.

“I’ll probably lean into more of a management-level role,” she said. “It’s just hard because there are a lot less of those positions.

“Before I would just pursue things that interested me and skills that I enjoy. Now I feel more inclined to think about what’s actually going to be useful and marketable in the future.”

Peter Vukovic, who has been chief technology officer at several startups, expects just one percent or less of the population to benefit from AI.

“For the rest, it’s a gray area,” Vukovic, who lives in Bosnia, said. “There is a lot of reason for 99 percent of people to be concerned.”

AI is focused on efficiency and making money, but it could be channeled to serve other purposes, Vukovic said.

“What’s the best way for us to use this?” he asked. “Is it really just to automate a bunch of jobs?”
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NASA has succeeded in reestablishing full contact with Voyager 2 by using its highest-power transmitter to send an “interstellar shout” that righted the distant probe’s antenna orientation, the space agency said Friday.

Launched in 1977 to explore the outer planets and serve as a beacon of humanity to the wider universe, it is currently more than 19.9 billion kilometers from our planet — well beyond the solar system. 

A series of planned commands sent to the spaceship on July 21 mistakenly caused the antenna to point 2 degrees away from Earth, compromising its ability to send and receive signals and endangering its mission.

The situation was not expected to be resolved until at least Oct. 15 when Voyager 2 was scheduled to carry out an automated realignment maneuver.

But Tuesday, engineers enlisted the help of multiple Earth observatories that form the Deep Space Network to detect a carrier or “heartbeat” wave from Voyager 2, though the signal was still too faint to read the data it carried.

In an update on Friday, NASA’s Jet Propulsion Laboratory (JPL), which built and operates the probe, said it had succeeded in a longshot effort to send instructions that righted the craft.

“The Deep Space Network used the highest-power transmitter to send the command (the 100-kw S-band uplink from the Canberra site) and timed it to be sent during the best conditions during the antenna tracking pass in order to maximize possible receipt of the command by the spacecraft,” Voyager project manager Suzanne Dodd told AFP.

This so-called “interstellar shout” required 18.5 hours traveling at light speed to reach Voyager, and it took 37 hours for mission controllers to learn whether the command worked, JPL said in a statement.

The probe began returning science and telemetry data at 12:29 a.m. Eastern Time on Friday, “indicating it is operating normally and that it remains on its expected trajectory,” JPL added.

‘Golden records’

Voyager 2 left the protective magnetic bubble provided by the sun, called the heliosphere, in December 2018, and is currently traveling through the space between the stars.

Before leaving our solar system, it explored Jupiter and Saturn, and became the first and so far only spacecraft to visit Uranus and Neptune.

Voyager 2’s twin, Voyager 1, was mankind’s first spacecraft to enter the interstellar medium, in 2012, and is currently almost 24 billion kilometers from Earth.

Both carry “Golden Records” — 30-centimeter, gold-plated copper disks intended to convey the story of our world to extraterrestrials.

These include a map of our solar system, a piece of uranium that serves as a radioactive clock allowing recipients to date the spaceship’s launch, and symbols that convey how to play the record.

The contents of the discs, selected for NASA by a committee chaired by legendary astronomer Carl Sagan, include encoded images of life on Earth, as well as music and sounds that can be played using an included stylus.

For now, the Voyagers continue to transmit scientific data to Earth, though their power banks are expected to eventually be depleted sometime after 2025.

They will then continue to wander the Milky Way, potentially for eternity, in silence. 
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