This article is from Proof Positive, our friendly math newsletter that's delivered to your inbox every Tuesday afternoon. Sign up today and read it first. Whether it’s the climate crisis, a pandemic ...

Watching hours of “sheepdog YouTube”—competitions where trained dogs shepherd a small number of unpredictable sheep—gave scientists a key insight into how to control chaotic swarms. The trick, they ...

Test time has arrived: the first person has been treated in a highly anticipated gene-therapy trial that aims to coax aged cells to take on a younger identity. The clinical trial is testing an ...