One barrel of petroleum holds 42 gallons.
20
One 75-watt bulb gives more light than three 25-watt bulbs.
57
No matter how cold it gets, gasoline will not freeze.
107
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Nearly 50% of the world's scientists are assigned to military projects.
71
The only letter not appearing on the Periodic Table is the letter "J".
180