The earth is approx. 6,588,000,000,000,000,000 tons.
175
Balsa wood is classified as a hard wood!
41
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
One third of the electricity produced on earth is used to power electric light bulbs!
75
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16