The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The storage capacity of human brain exceeds 4 Terrabytes.
140
According to studies, men change their minds two to three times more often than women.
72
German chemists made a replica of a trophy the size of one molecule.
68
The bark of an older redwood tree is fireproof.
65
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5