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Nvidia is caught up in the new sanctions the U.S. is imposing on China. Rita reports the company said it will not be able to export two of its AI chips to China, its second-largest market. That will likely cost Nvidia some $400 million in lost sales for this third quarter and interrupt some production that happens in China. get a roundup of TechCrunch’s biggest and most important stories delivered to your inbox every day at 3 p.m. PDT, subscribe here.

Happy Friday! For those of you excited to see us in your inbox for your daily dose of tech news, unfortunately, you will have to wait until Tuesday to hear from us again because Monday is Labor Day in the U.S. We will be out grilling, wearing white for the last time this year and snoozing in hammocks. We wish you a safe and enjoyable weekend wherever you are. — Christine and Haje.

The promise and perils of a breakthrough in machine intelligence.

Astronomers may soon have the answer to what is perhaps the greatest mystery of modern science –is dark energy a uniform force across space and time, or has its strength evolved over eons?

The universe is not only expanding – it is accelerating outward, driven by what is commonly referred to as “dark energy.” The term is a poetic analogy to the label for dark matter, the mysterious material that dominates the matter in the Universe and that really is dark because it does not radiate light (it reveals itself via its gravitational influence on galaxies).

What goes on inside planets like Neptune and Uranus? To find out, an international team headed by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the University of Rostock and France’s École Polytechnique conducted a novel experiment. They fired a laser at a thin film of simple PET plastic and investigated what happened using intensive laser flashes. One result was that the researchers were able to confirm their earlier thesis that it really does rain diamonds inside the ice giants at the periphery of our solar system. And another was that this method could establish a new way of producing nanodiamonds, which are needed, for example, for highly-sensitive quantum sensors. The group has presented its findings in the journal Science Advances.

The conditions in the interior of icy giant planets like Neptune and Uranus are extreme: temperatures reach several thousand degrees Celsius, and the pressure is millions of times greater than in the Earth’s atmosphere. Nonetheless, states like this can be simulated briefly in the lab: powerful laser flashes hit a film-like material sample, heat it up to 6,000 degrees Celsius for the blink of an eye and generate a shock wave that compresses the material for a few nanoseconds to a million times the atmospheric pressure.

“Up to now, we used hydrocarbon films for these kinds of experiment,” explains Dominik Kraus, physicist at HZDR and professor at the University of Rostock. “And we discovered that this extreme pressure produced tiny diamonds, known as nanodiamonds.”

DENVER — During the dog days of summer, it’s important to keep your home cool. But when thousands of Xcel customers in Colorado tried adjusting their thermostats Tuesday, they learned they had no control over the temperatures in their own homes.

Temperatures climbed into the 90s Tuesday, which is why Tony Talarico tried to crank up the air conditioning in his partner’s Arvada home.

“I mean, it was 90 out, and it was right during the peak period,” Talarico said. “It was hot.”

That drought is set to worsen with a fifth consecutive failed rainy season, the WMO projected on Friday, fearing an unprecedented humanitarian catastrophe.

Ethiopia, Kenya and Somalia are already going through their worst drought for 40 years.

Continue reading “UN weather agency predicts rare ‘triple-dip’ La Nina in 2022‘ data-reactroot=’” »

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When our eyes move during REM sleep, we’re looking at things in the dream world our brains have created, according to a new study by researchers at the University of California, San Francisco (UCSF). The findings shed light not only on how we dream, but also on how our imaginations work.

REM sleep, which is named for the rapid eye movements associated with it, has been known since the 1950s to be the phase of sleep when dreams occur. But the purpose of the eye movements has remained a matter of much mystery and debate.

REM sleep first occurs about 90 minutes after falling asleep. Your eyes rapidly move from side to side behind closed eyelids. Mixed frequency brain wave activity becomes closer to that seen in wakefulness. Your breathing becomes faster and irregular, and your heart rate and blood pressure increase to near waking levels. Although some can also occur in non-REM sleep, most of your dreaming occurs during REM sleep. Your arm and leg muscles become temporarily paralyzed, which prevents you from acting out your dreams. You sleep less of your time in REM sleep as you age.

Meyer Burger has signed a binding supply agreement for silicon wafers with the Norwegian manufacturer Norwegian Crystals. The polysilicon used to manufacture the wafers is of European and U.S. origin.