In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
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In Mexico, artists can pay their taxes using artwork that they create.
4
In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
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If you chew gum when you study a subject and then chew the same flavor when you take the test, it will help you remember!
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Scientist Niels Bohr was “given a house next door to the Carlsberg brewing company, and had a pipeline running from the brewery into the house so that he could have a never-ending supply of fresh beer on tap”.
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