Diamonds can be shattered with a hammer.
-104
The average temperature at 40,000 feet above sea level is -60 F.
56
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Hot water can freeze faster than cold water.
181
Sound travels fifteen times faster through steel than through air.
134