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"Researchers have found that the carbon footprint of generative AI-based tools that can turn text prompts into images and videos is far worse than we previously thought," writes Futurism: As detailed in a new paper, researchers from the open-source AI platform Hugging Face found that the energy demands of text-to-video generators quadruple when the length of a generated video doubles — indicating that the power required for increasingly sophisticated generations doesn't scale linearly. For instance, a six-second AI video clip consumes four times as much energy as a three-second clip. "These findings highlight both the structural inefficiency of current video diffusion pipelines and the urgent need for efficiency-oriented design," the researchers concluded in their paper... Fortunately, there are ways to slim down those demands, including intelligent caching, the reusing of existing AI generations, and "pruning," meaning the sifting out of inefficient examples from training datasets. The Hugging Face researchers gave their paper a cheeky title. "Video Killed the Energy Budget: Characterizing the Latency and Power Regimes of Open Text-to-Video Mode."

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Electric powertrains allow for "crazy fast acceleration figures," reports Car and Driver, as well as "huge power numbers." And now a Chinese luxury electric car brand owned by BYD Auto "just hit a top speed of 308.4 mph, making it not only the fastest electric car on the planet, but the fastest car. Period." Engadget reports that the U9 Xtreme "is packed with four motors that produce just under 3,000 horsepower. The electric hypercar also runs on one of the world's first 1,200V platforms, which offers better performance and efficiency, along with some weight reduction." And Car and Driver adds that "Other changes to achieve the speed include dropping the wheel size from 21 to 20 inches, narrowing the front track, and adding wider, semi-slick track tires at the front of the car." One small caveat that doesn't lessen the impressiveness of the feat is that while the U9 Xtreme does classify as a production model, it barely does. That's because BYD is planning to limit production of the top-speed version of the U9 to no more than 30 units. The car hit its "facemelting" top speed during a livestream at Germany's Automotive Testing Papenburg, reports Engadget. Thanks to long-time Slashdot reader hackingbear for sharing the news.

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The heliosphere "plays a major role in why life is possible on our planet," reports CNN, "and how it perhaps once existed on others such as Mars." (Basically solar winds create "a constant flow of charged particles" that form "an enormous bubble that protects the planets in our solar system from cosmic radiation permeating the Milky Way".) NASA says the heliosphere's boundary is three times the distance between Earth and Pluto. (After leaving the heliosphere NASA's Voyager probes collected key data about the heliosphere.) But now there's a new mission to investigate "how that solar wind interacts with interstellar space at the boundary of the heliosphere," CNN reports — called the Interstellar Mapping and Acceleration Probe (or IMAP): The spacecraft's 10 instruments will also fill gaps in the existing map of the heliosphere, pieced together from data collected by previous missions, and help further explain how the heliosphere largely shields our solar system from damaging cosmic rays, the most highly energetic particles in the universe. Along with two other space weather missions that lifted off aboard the same rocket on Wednesday, IMAP will help scientists better predict when solar storms unleashed by the sun could affect our planet. When aimed at Earth, harsh radiation from the storms, also known as space weather, can pose risks to astronauts on the International Space Station as well as interfere with communications, the electric power grid, navigation, and radio and satellite operations. "This next set of missions is the ultimate cosmic carpool," said Dr. Joe Westlake, director of NASA's Heliophysics Division, during a news conference on Sunday. "They will provide unprecedented insight into space weather. Every human on Earth, as well as nearly every system involved in space exploration and human needs, is affected by space weather...." The IBEX, or Interstellar Boundary Explorer, satellite has been mapping the heliosphere since launching in 2008. But IMAP can explore and map the boundaries of the heliosphere like never before because it has instruments with faster imaging that are capable of 30 times higher resolution. Once it reaches an orbit about 1 million miles (1.6 million kilometers) from Earth in about three months, IMAP will also capture observations of the solar wind in real time and measure particles that travel from the sun, study the heliosphere's boundary between 6 billion and 9 billion miles (9.7 billion to 14.5 billion kilometers) away, and even collect data from interstellar space. Also launching was the SWFO-L1 mission, which CNN says is "intended to act as a solar storm detector, providing early warnings to protect astronauts in low-Earth orbit and satellites that provide critical communications on Earth. It's a tool that will be even more necessary as astronauts venture farther into deep space." NASA streamed the launch live on YouTube.

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YouTube's new "Labs" program plans to "offer a glimpse of the AI features it's developing for YouTube Music," reports Ars Technica. But Ars Technica adds that this future "starts with AI 'hosts' that will chime in while you're listening to music. Yes, really." (YouTube says the AI aims to "deepen your listening experience"...) The "Beyond the Beat" host will break in every so often with relevant stories, trivia, and commentary about your musical tastes. YouTube says this feature will appear when you are listening to mixes and radio stations. The experimental feature is intended to be a bit like having a radio host drop some playful banter while cueing up the next song. It sounds a bit like Spotify's AI DJ, but the YouTube AI doesn't create playlists like Spotify's robot... After joining, the YouTube Music app will get a new button on the Now Playing screen with the familiar Gemini sparkle logo. Tapping that will allow you to snooze the commentary for an hour or the remainder of the day. There is no option to completely disable the AI host in the app, so you'll have to opt out of the test if you decide Beyond the Beat is more trouble than it's worth. YouTube calls it "a way for users to take our cutting edge AI experiments for a test drive," promises that "a limited number of US-based participants can test early prototypes and experiments and influence the future of YouTube. Sign up at YouTube.com/New." Ars Technica believes "This is still generative AI, which comes with the risk of hallucinations and low-quality slop, neither of which belongs in your music. That said, Google's Audio Overviews are often surprisingly good in small doses."

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DJI has lost its lawsuit against the U.S. Department of Defense, failing to remove its designation as a Chinese Military Company. US District Court Judge Paul Friedman ruled the Pentagon has broad discretion to make such designations, finding sufficient evidence that DJI qualifies as a "military-civil fusion contributor" based on its recognition by China's National Development and Reform Commission as a National Enterprise Technology Center. The designation provides DJI substantial government benefits including cash subsidies, special financial support and tax benefits. The judge rejected several of the DoD's other claims for insufficient evidence and noted the department confused two different Chinese industrial zones when attempting to prove DJI's factories were in state-sponsored areas. DJI faces a total import ban on new products this December and US customs has already stopped many consumer drone shipments. The company says it is evaluating legal options.

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