In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
A ball of glass will bounce higher than a ball made of rubber.
73
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Balsa wood is classified as a hard wood!
41