Nearly 50% of the world's scientists are assigned to military projects.
71
In zero gravity, a candle's flame is round and blue.
16
Balsa wood is classified as a hard wood!
41
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Research indicates that plants grow healthier when they are stroked.
173
One ragweed plant can release as many as one billion grains of pollen!
51
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
