There are 18 species of penguin, over 90 different species of whale (the largest of which is over 300,000 pounds), and more than 15,000 different species of ant, but there is only one species of human ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. When scientists sequenced the Neanderthal genome in 2010, they learned that Neanderthals ...