The Download: the Saudi sci-fi megacity, and sleeping babies’ brains

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. These exclusive satellite images show Saudi Arabia’s sci-fi…

Babies spend most of their time asleep. New technologies are beginning to reveal why

Later, when Austin and his team analyzed snapshots of the recordings, they noticed differences in the brain during active and quiet sleep. During active sleep, when the babies were more…