The average temperature at 40,000 feet above sea level is -60 F.
56
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Sound travels fifteen times faster through steel than through air.
134
The average home creates more pollution than does the average car.
33
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79