The U.S. government must move “quickly and decisively” to avert substantial national security risks stemming from artificial intelligence (AI) which could, in the worst case, cause an “extinction-level threat to the human species,” says a report commissioned by the U.S. government published on Monday. “Current frontier AI development poses urgent and growing risks to national security,” the report, which TIME obtained ahead of its publication, says. “The rise of advanced AI and AGI [artificial general intelligence] has the potential to destabilize global security in ways reminiscent of the introduction of nuclear weapons.

On July 3, 1985, Michael J. Fox skateboarded into the American imagination as Marty McFly, the guitar-shredding teenage hero of Back to the Future. The trilogy, released over the course of five actual years but time-traveling back and forth across three centuries, has aged relatively well in the ensuing years. It’s now remembered not only as a feel-good family romp through the space-time continuum but also as a reflection of American fears and values in the mid-1980s.

A new piece of jewelry can pull together an entire outfit, but it also serves as a wearable form of self-expression and creativity. It can be a symbol of a sweet memory or express a heartfelt thought, and there are just so many customizable options. However, when you’re looking for something for casual wear or a fun accessory or a Valentine’s Day gift for someone else or even for yourself, you may not want to spend as much as you would, say, an engagement ring—but you still want quality.

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When U.S. Olympic skier Bode Miller broke down on camera Sunday during an interview following his bronze-medal-winning run in the Super G, viewers decried the insensitivity of the probing reporter. A former Olympic ski medalist herself, correspondent Christin Cooper took the opportunity to ask about Miller’s recently deceased brother Chelone–after Miller brought it up. Cooper then asked Miller, with tears in his eyes, about a pre-race moment in which he seemed to be talking to someone as he stared into the sky.