Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Scientists aren't sure what color dinosaurs were.
312
Your brain is 80% water.
525
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
According to studies, men change their minds two to three times more often than women.
72
