La Paz, Bolivia has an average annual temperature below 50 degrees Fahrenheit. However, it has never recorded a zero-degree temperature. Same for Stanley, Falkland Islands and Punta Arenas, Chile.

Mark Twain was born on a day in 1835 when Halley's Comet came into view. When he died in 1910, Halley's Comet was in view again.

Percentage of women who say they are happier: 85.

AMAZING FACTS