Tweets ‘n’ Twenties

Some worry that the chatter about these tools is doing the whole field a disservice.

Perovskites are promising, but real-world conditions have held them back.

Most public health bodies dealing with covid have long since moved on from the idea of surface transmission. China’s didn’t—and that helps it control the narrative about the disease’s origins and danger.

The European Union is planning new legislation aimed at curbing the worst harms associated with artificial intelligence.