Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The smell of freshly cut grass is actually a plant distress call.
31
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Brass doorknobs automatically disinfect themselves in about 8 hours.
18