The mystery of motion sickness

Although one third of the population suffers from motion sickness, scientists aren’t exactly sure what causes it. Like the common cold, it’s a seemingly simple problem that’s still without a cure. And if you think it’s bad on a long family car ride, imagine being a motion sick astronaut! Rose Eveleth explains what’s happening in our bodies when we get the car sick blues.

The Invisible Universe Of The Human Microbiome

The next time you look in a mirror, think about this: In many ways you’re more microbe than human. There are 10 times more cells from microorganisms like bacteria and fungi in and on our bodies than there are human cells. But these tiny compatriots are invisible to the naked eye. So we asked artist Ben Arthur to give us a guided tour of the rich universe of the human microbiome.

What Causes Traffic Jams?

It’s happened to all of us: we’re cruising down the freeway and suddenly find ourselves stuck in a thick jam of other cars. Where did they come from? What caused the traffic mess? Scientific American editor Larry Greenemeier explains.