Imagine Max, a well-trained border collie, manages to ignore a squirrel in the park when his owner tells him to sit. His owner says, "Max, stop chasing that squirrel and sit down," and Max obeys. Can ...

The miracle material has made modern life possible. But more than 40 percent of it is used just once, and it’s choking our waterways. Just after dawn in Kalyan, on the outskirts of Mumbai, India, ...