Real diamonds do not show up on x-ray.
36
Your fingernails grow faster in summer.
744
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Any domino can knock over another object up to 1.5x its size. The 32nd object would be big enough to knock over the Empire State Building.
18
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10