Pumice is the only rock that floats on water.
14
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
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
Scientists aren't sure what color dinosaurs were.
312
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
