Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Sound at the right vibration can bore holes through a solid object.
134
One ragweed plant can release as many as one billion grains of pollen!
51
Scientists aren't sure what color dinosaurs were.
312
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The force of a suction cup is calculated using F=AP.
15
