Our intestines work hard, digesting and absorbing nutrients from our food and making them available to the body. It’s a fact that if they were spread out, our intestines would be 400 to 500 square kilometers in area - twice as big as a tennis court.
There are many negative things to say about Donald Trump, but maybe he is en vogue in a world where people trust their emotions more than objective evidence.
Five things you should know about Oktoberfest: Why is the name misleading? What do you wear to the world’s biggest beer bash? What should you avoid doing?
The oceans are a dark mystery. They surround us, and yet they are largely unknown. We once thought they were flat and boring. We now know they are anything but. And there's so much more to discover.
It's one thing to land on a comet. But to meet an asteroid, grab a sample, and bring it back to Earth - that's a whole new dimension. NASA's OSIRIS-REx Asteroid Sample Return Mission aims to do just that.
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