Worm Discovery Illuminates How Our Brains Might Have Evolved
Thursday, March 15, 2012 - 07:01
in Paleontology & Archaeology
Our earliest invertebrate ancestors did not have brains. Yet, over hundreds of millions of years, we and other vertebrates have developed amazingly complicated mental machinery. "It must have evolutionary roots somewhere, but where?" wrote Henry Gee, an editor at Nature, in an essay published in the journal's March 15 issue. ( Scientific American is part of Nature Publishing Group.) [More]