The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Aluminum used to be more valuable than gold!
84
Your brain is 80% water.
525
Most dust particles in your house are made from dead skin!
67