One third of the electricity produced on earth is used to power electric light bulbs!
75
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Balsa wood is classified as a hard wood!
41
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Nylon is made from coal and petroleum.
42
Sound travels about 4 times faster in water than in air.
408
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