Their dams cause floods, and that gets them in trouble with humans. But in the right place, more water can be a big help. By Catrin Einhorn and Kim Raff In the Ozarks, the growing college town of ...

As more spaceflight missions plan to take humans back to the moon — and beyond — a key goal is to understand how spaceflight affects the immune system. In this Review, researchers from academia and ...

You can use apostrophes to show that you have omitted (left out) some letters when you are joining words together. For example, you can join the words ‘you’ and ‘are’ together. You + are = you're. The ...