A cubic yard of air weighs about 2 pounds at sea level.
31
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Out of all the senses, smell is most closely linked to memory.
146
4.5 pounds of sunlight strike the Earth each day.
27
One third of the electricity produced on earth is used to power electric light bulbs!
75
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75