The bark of an older redwood tree is fireproof.
65
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Iron weighs more after it rusts.
68
Nearly 50% of the world's scientists are assigned to military projects.
71
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Nylon is made from coal and petroleum.
42
The smell of freshly cut grass is actually a plant distress call.
31