“Only a few molecules separate you from having sensory whiskers and a penis spine. That’s right – evolution has cheated you out of those whiskers that make your cat a super-sensor and the spines that, well, make your penis super-sensitive. A study published today in Nature reveals that human DNA still bears traces of genes that could, if tinkered with slightly, cause the next generation of Homo sapiens to have new sensory organs. And penis spines. How would that work?” (via Gizmodo).