One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Scientists in Germany have developed a candy that doesn't cause cavities.
11
One cubic foot of gold weighs more than 1,200 pounds!
78
Aluminum used to be more valuable than gold!
84
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
