Engineers have partially restored a 1970s-era computer on NASA's Voyager 1 spacecraft after five months of long-distance troubleshooting. Exactly how long-distance? 15 billion miles away.
Physicists call the dark energy that drives the universe "the cosmological constant." Now the largest map of the cosmos to date hints that this mysterious energy has been changing over billions of years.
Jason Matheny, CEO of the influential think tank Rand Corporation, says advances in AI are making it easier to learn how to build biological weapons and other tools of destruction.
Britain's former climate adviser says the country's future plans are weak, climate protests are no longer helpful, and working closely with Big Oil is a jarring necessity.
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