Scientists have discovered that one of the primary things that has made us human is a surprising one: our ability to throw.
Researcher Neil T. Roach proposes that this ability first evolved nearly 2 million years ago to aid in hunting. Humans are unique in their throwing ability, even when compared to our chimpanzee cousins.
He says, "Chimpanzees are incredibly strong and athletic, yet adult male chimps can only throw about 20 miles per hour–one-third the speed of a 12-year-old little league pitcher." (Throwing sports, like baseball, are literally in our genes.)