Mr. Smarty Pants Knows

Herbert Spencer popularized the phrase "survival of the fittest" and the use of the Oxford comma (a comma inserted after the second to last item in a list of three or more items).

According to the Sierra Club, all apples can be traced back to two trees in Kazakhstan.

NBC network suits forbade Barbara Eden from showing her belly button in I Dream of Jeannie, even though it was OK for others, especially in the episode "Jeannie Goes to Honolulu," which included several women in bikinis. Her navel can be seen briefly in a few episodes in seasons 4 and 5.

Eaglets have barbs on their tongues to help move food to the back of their throat.

The Pacific island nation of Tokelau has the smallest GDP of any country or territory in the world. But more than 31.3 million websites have been registered with the Tokelauan web domain .tk. China has 16.8 million .cn domains and Germany has 16 million .de domains.