Japan sea sludge tells story of human impact on Earth

Beneath the seawater in Japan's Beppu Bay lie layers of seemingly unremarkable sediment and sludge that tell the story of how humans have fundamentally altered the world around them.

The Mars Sample Return mission is starting to look expensive

Getting to space is hard. It's even more hard to do new and interesting things in space. And when projects get hard, that usually means they cost more money. That is certainly the case for one of the most anticipated missions ...

DNA barcoding identifies the plants a person has eaten

What people say they've eaten and what they've actually eaten are often two very different lists of foods. But a new technique using DNA barcoding to identify the plant matter in human feces may get at the truth, improving ...

page 36 from 40