The force of a suction cup is calculated using F=AP.
15
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
According to studies, men change their minds two to three times more often than women.
72
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Iron weighs more after it rusts.
16
One ragweed plant can release as many as one billion grains of pollen!
51