The bark of an older redwood tree is fireproof.
65
Scientists aren't sure what color dinosaurs were.
312
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
