When Charles Darwin first sketched how species evolved by natural selection, he drew what looked like a tree. The diagram started at a central point with a common ancestor, then the lines spread apart as ...
Jan 09, 2013
4 / 5 (6) | 1 |
(Medical Xpress) -- A new scientific theory on what we learn to pay attention to and what we learn to ignore could turn 30 years of research on its head.
Jun 08, 2011
2.2 / 5 (5) | 10 |