Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
A cesium atom in an atomic clock beats over nine billion times a second.
43
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The smell of freshly cut grass is actually a plant distress call.
31
The sun is 330,330 times larger than the earth.
75
Cold water weighs more than hot water.
93
