The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One ragweed plant can release as many as one billion grains of pollen!
51
In zero gravity, a candle's flame is round and blue.
16
Nearly 50% of the world's scientists are assigned to military projects.
71
The bark of an older redwood tree is fireproof.
65
Sound at the right vibration can bore holes through a solid object.
134