Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The bark of an older redwood tree is fireproof.
65
4.5 pounds of sunlight strike the Earth each day.
27
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Most dust particles in your house are made from dead skin!
67
One ragweed plant can release as many as one billion grains of pollen!
51
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