Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Aluminum used to be more valuable than gold!
84
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
The bark of an older redwood tree is fireproof.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61