Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
German chemists made a replica of a trophy the size of one molecule.
68
Sound travels about 4 times faster in water than in air.
408
Nearly 50% of the world's scientists are assigned to military projects.
71
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Scientists aren't sure what color dinosaurs were.
312