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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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
The first guy to win Who Wants To Be A Millionaire (USA) used none of his lifelines until the final question, where he called his dad. During the call, he told his dad he didn't need any help on the final question, but he just wanted to let him know that he was about to win $1,000,000.
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Leonardo da Vinci could write with one hand and draw with the other at the same time.
56
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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