According to studies, men change their minds two to three times more often than women.
72
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Hot water can freeze faster than cold water.
181
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
German chemists made a replica of a trophy the size of one molecule.
68
Sound at the right vibration can bore holes through a solid object.
134
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9