Science News

CAPE CANAVERAL, Fla. (AP) — A private U.S. lunar lander reached the moon and eased into a low orbit Wednesday, a day before it will attempt an even greater feat — landing on the gray, dusty surface. A smooth touchdown would put the U.S.

Smartwatches and rings that claim to measure blood sugar levels for medical purposes without piercing the skin could be dangerous and should be avoided, the U.S. Food and Drug Administration warned Wednesday .

CAPE CANAVERAL, Fla. (AP) — An old Earth-observing satellite fell out of orbit Wednesday and harmlessly broke apart over the Pacific. The European Remote Sensing 2 satellite reentered halfway between Hawaii and Alaska.

WASHINGTON (AP) — Alzheimer’s quietly ravages the brain long before symptoms appear and now scientists have new clues about the dominolike sequence of those changes — a potential window to one day intervene.

SANTA CLARA, Calif. (AP) — Nvidia Corp.

NASHVILLE, Tenn.

NEW YORK (AP) — Emily Hollenbeck lived with a deep, recurring depression she likened to a black hole, where gravity felt so strong and her limbs so heavy she could barely move. She knew the illness could kill her.

WASHINGTON (AP) — President Joe Biden on Wednesday signed an executive order and created a federal rule aimed at better securing the nation's ports from potential cyberattacks.

The Biden administration is wading into a contentious debate about whether the most powerful artificial intelligence systems should be “open-source” or closed .

NEW YORK (AP) — Emily Hollenbeck lived with a recurring depression she likened to a black hole, where gravity felt so strong and her limbs so heavy she could barely move. She knew the illness could kill her. Both her parents had taken their lives.