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Has the social media site been good for our mental health or not? The evidence isn't straightforward, researchers say, despite lots of study. How Facebook makes you feel may depend on how you use it.

Salt Lake City was ranked seventh in the nation for being the best metropolitan area for STEM (science, technology, engineering and math) professions,…

Andrew Weissmann, one of the best-known lawyers in special counsel Robert Mueller's office, is set to depart soon from that job and the Justice Department, NPR has learned.

The National Academies of Sciences, Engineering and Medicine sorted through 10,000 studies to determine the good and bad health effects of marijuana. Tight drug restrictions impede research, they say.

Facebook paid $19 billion for the instant messaging service WhatsApp even though it's never disclosed whether it's profitable. Aarti Shahani of KQED explains what Facebook sees in its new acquisition.

Broadcasting in both English and Spanish with Facebook's new live-streaming tool, one of the nation's most recognizable anchors has found millions of viewers.

A committee of experts examined about a dozen different synthetic biology technologies that could be potentially misused. For each, they considered how likely it was to be usable as a weapon.

The social networking site is paying a reported $1 billion in stock and cash for the photo-sharing app.

The biggest story of the night is that Democrats took back the House. That will stop President Trump's agenda in its tracks unless he compromises with the other side.

A woman who lived in one of the buildings said she stayed with her parents the night before the collapse because many of the doors in her building wouldn't close. "It could have been me," she said.