Scientists disagree. You should not be surprised.

Ardipithecus ramidus—the skeletal proto-human also known as Ardi—was discovered almost 18 years ago. The first scientific reporters were published last year. And now, other researchers are coming forward to challenge the way Ardi's discoverers interpreted the evidence about her habitat and place in the human family tree. But here's the kicker—these challenges aren't a scandal. In fact, this is the normal way that science, of all sorts, happens. I point this out, because I think it's a basic fact that the public doesn't really understand, and that we—the science reporters—often forget to clarify. Science works because scientists disagree. They challenge each other's ideas, find better ways to interpreting the data and eventually come to conclusions that bring us closer to truth. (Story via Cort Sims)