Nylon is made from coal and petroleum.
42
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
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