In zero gravity, a candle's flame is round and blue.
16
One ragweed plant can release as many as one billion grains of pollen!
51
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The smell of freshly cut grass is actually a plant distress call.
31
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The force of a suction cup is calculated using F=AP.
15