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
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One ragweed plant can release as many as one billion grains of pollen!
51
The storage capacity of human brain exceeds 4 Terrabytes.
140
A cubic yard of air weighs about 2 pounds at sea level.
31