The evolution of kissing

Kissing is so common that we rarely ask why humans touch their lips together to show affection. One obvious answer is that it feels good. Densely packed nerve endings make your lips some of the most acutely sensitive regions of your entire body, and few things get them more riled up than a kiss. But where in humanity's … » 10/12/12 11:35am 10/12/12 11:35am

What can the DNA of bonobos teach us about what it means to be human?

An international team of researchers has mapped the genome of the bonobo for the first time, revealing that this great ape shares as much DNA with humans as its more aggressive cousin, the chimpanzee. Identifying and understanding how all three genomes overlap, researchers say, could offer new insights into what makes… » 6/13/12 1:21pm 6/13/12 1:21pm