One barrel of petroleum holds 42 gallons.
20
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
According to studies, men change their minds two to three times more often than women.
72
The sun is 330,330 times larger than the earth.
75
Research indicates that plants grow healthier when they are stroked.
173
Iron weighs more after it rusts.
68