Science

From hate speech to fake news: The content crisis facing Mark Zuckerberg
The Facebook chief has an army of subcontractors making editorial judgments about millions of pieces of content -- like a media company. But the rules they operate by are complex and contradictory.
Twitter suspends prominent alt-right accounts
Several suspended accounts are linked to Richard Spencer, one of the leaders of the movement associated with white nationalism. Twitter has been pushing to curb hate speech and abuse on its platform.
'Minibrains' could help drug discovery for Zika and for Alzheimer's
Each lab-grown cluster of human cells fits on a pin's head, but contains some of the cell types and circuitry of a real brain. The structures already are offering insights into how Zika attacks.
An app saw Trump winning swing states when polls didn't
The startup Brigade built an app that asks a simple question: Which candidate are you going to vote for? The company's data pointed to a big crossover effect: Democrats voting for Trump in droves.