The average temperature at 40,000 feet above sea level is -60 F.
56
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound travels about 4 times faster in water than in air.
408
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17