The smell of freshly cut grass is actually a plant distress call.
31
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Pure water (H2O) does not conduct electricity on its own.
46
Scientists aren't sure what color dinosaurs were.
312
Out of all the senses, smell is most closely linked to memory.
146
In zero gravity, a candle's flame is round and blue.
16