You can't hum while holding your nose closed. Try it!
Amina Bell
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A bolt of lightning is five times hotter than the surface of the sun.
Sloths can hold their breath longer than dolphins—up to 40 minutes.
Cows have best friends and get stressed when they are separated.
Water can boil and freeze at the same time, in a condition called the triple point.
The fingerprints of a koala are so similar to humans that they can confuse crime scene investigators.
