Nearly 1 in 20 Americans older than 50 have artificial knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population.
Scientists say NASA is about to propose major cuts in its exploration of other planets, especially Mars. And NASA’s former science chief is calling it irrational.
Federal weather forecasters say the La Nina weather phenomenon that contributed to the southwestern U.S. drought is winding down.
It turns out Netflix’s fourth-quarter earnings aren’t quite as good as the video subscription service told investors a couple weeks ago.
Within just over a week, Netflix and Hulu are both debuting their first stabs at original scripted programming.
A request for an injunction to stop Twitter users from alerting drivers to police roadblocks, radar traps and drunk-driving checkpoints could make Brazil the first country to take Twitter up on its plan to censor content at governments’ requests.