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
Sound travels about 4 times faster in water than in air.
408
Hot water can freeze faster than cold water.
181
A cubic yard of air weighs about 2 pounds at sea level.
31
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The smell of freshly cut grass is actually a plant distress call.
31
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17