Neanderthals' large eyes 'caused their demise'

A study of Neanderthal skulls suggests that they became extinct because they had larger eyes than our species. As a result, more of their brains were devoted to seeing in the long, dark nights in Europe, at the expense of high-level processing. By contrast, the larger frontal brain regions of Homo sapiens led to the fashioning of warmer clothes and the development of larger social networks...more  

The next time your watching the news check out the size of the eyes of those DC Deep Thinkers...they're huge.