Each day, up to 150 species of life become extinct.
-23
4.5 pounds of sunlight strike the Earth each day.
27
Most dust particles in your house are made from dead skin!
67
Sound at the right vibration can bore holes through a solid object.
134
A ball of glass will bounce higher than a ball made of rubber.
73
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
If the chemical sodium is dropped into water it will immediately and violently explode.
67
One 75-watt bulb gives more light than three 25-watt bulbs.
57