The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Balsa wood is classified as a hard wood!
41
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Nylon is made from coal and petroleum.
42
One 75-watt bulb gives more light than three 25-watt bulbs.
57
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
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