The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
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
4.5 pounds of sunlight strike the Earth each day.
27
Aluminum used to be more valuable than gold!
84
Sound travels about 4 times faster in water than in air.
408
A cesium atom in an atomic clock beats over nine billion times a second.
43
Each day, up to 150 species of life become extinct.
-23
The average home creates more pollution than does the average car.
33