The only letter not appearing on the Periodic Table is the letter "J".
180
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Each day, up to 150 species of life become extinct.
-23
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
Cold water weighs more than hot water.
93
Balsa wood is classified as a hard wood!
41
The bark of an older redwood tree is fireproof.
65