We learned why we don't laugh when we tickle ourselves.

Ever wondered exactly what's in every breath you take?

Looking to cut down on the food bill? Here's how to eat for $15 a week.

Flying a tiny "ultralight" plane from London to Australia is no easy task. Especially when the pilot is blind.

It's supposed to be easier for kids to learn new things. But a new study suggests that the adult brain may be just as flexible.

The space race is heating up. A new, revolutionary "thruster" could reduce the trip to Mars from 6 months to 1 week.

And the latest entrant in the race to be the fuel of the future is... salt water.