Their hinted common origins, in fact, point to something greater beyond either. (religion-online.org)
While bad breath can be caused by disease in many parts of your body, it's most common origin is a problem in your mouth. (drstevenlin.com)
Nobody is suggesting that toolmaking has common origins in humans and crows, but there is a remarkable similarity in the ways in which their respective brains work. (newscientist.com)