Most dust particles in your house come from dead skin.
48
Iron weighs more after it rusts.
68
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
One ragweed plant can release as many as one billion grains of pollen!
51
The storage capacity of human brain exceeds 4 Terrabytes.
140
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A cubic yard of air weighs about 2 pounds at sea level.
31