A Moment of Science
For over 1,800 years, this tunnel has been sealed off from the world.
You may have held Mexican jumping beans as a child and wondered how they work. The answer may surprise you...
This goo is called mucilage. It's the stuff that enables the living plant to store water. In tests, the mucilage proves capable of removing even arsenic.
You’re a polar explorer and you’ve just reached the north pole. The huskies are yapping, the cameras are ready and you’re just about to unfurl the flag when, all of a sudden, the north pole becomes the south pole. Imagine your chagrin. Okay, so it doesn’t really happen that fast, but it’s true that in the past the earth’s magnetic poles have switched places. In fact, it seems to happen roughly every 250,000 years or so. How do we know this? Learn more on this Moment of Science.
Learn about the many advantages of butterfly wings on this Moment of Science.
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