The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
Pluto is smaller than Russia.
9
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The four ghosts in Pac-Man are programmed to act differently: red chases you, pink just tries to position itself in a set way, blue tries to ambush you and orange is random.
21
The colossal squid has the largest eyes in the world.
4
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18