SpaceX and others plan to launch thousands of new satellites into low-Earth orbit, creating streaks that cut through astronomers’ images. Now NASA’s education office is asking citizen scientists to help document the problem. ...read more
Bats are the source of more dangerous viruses than any other mammal. Evolutionary tricks and fierce immune systems make them the perfect hosts. ...read more
An anthropologist traces the development of Homo sapiens’ most creative and destructive force, from the making of stone tools to the rise of religions. ...read more