Despite escalating pressure ahead of the 2020 presidential election, Facebook reaffirmed its freewheeling policy on political ads Thursday, saying it won’t ban them, won’t fact-check them and won’t limit how they can be targeted to specific groups of people.

Researchers found that African grey parrots voluntarily helped a partner get a food reward by giving the other bird a valuable metal token that could be exchanged for a walnut.

Doctors at the National Institutes of Health are engaging in a study to try to find the cause of, and treatments for, chronic fatigue syndrome.

Kelly Beatty from Sky and Telescope Magazine surveys mission launches, new spacecraft, and celestial highlights coming in 2020.

At the annual Consumer Electronics Show in Las Vegas, the gadgets range from big-screen TVs and 5G networks to futuristic health care devices and toilet-paper-toting robots.

A new book, The Joy of Movement, offers more motivation to exercise. It's not just about getting fit or looking good: Exercise can give you courage, pleasure, and better friendships.

Lab grown meat will be mass produced and available in grocery stores in a few years, says Harvard professor Kit Parker.

Joy can be cultivated. Hostility often masks depression. As one year ends and another begins, these six insights and tips from psychologists offer hope for a good new year.

Orca societies are matriarchal, and the elder killer whales bestow their wisdom on the younger generations.

He Jiankui announced in November 2018 that he had created the world's first gene-edited babies. Scientists are concerned about unintended side effects that could be passed down to future generations.