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Agriculture, hula hoops, SARS, and THIS video: how long did they take to get around the earth?
Have you ever wondered why leaves are green and not red, blue, or even black? We did too!
Still wondering why leaves are green and not purple or even black? CHLOROPHYLL! It's how leaves work.
What is the maximum height for a mountain on Earth!? And why?
Why Does Earth Have Deserts? For the same reason it has Rainforests: Hadley Cells!!!
Bedbugs!
Note: Both male and female Cimex lectularius feed on humans
MinuteEarth provides an energetic and entertaining view of trends in earth's environment -- in just a few minutes!
Henry explains what freezer burn is.
Why do we drive on the left/right!?