Evolution basically explains a lot of how we came into being what we and many organisms are today.
Ever so often someone can throw up "holes" in the theory and discoveries like the fossils found in Siberia or very recently in Spain can throw up more questions than answers and gave scientists grounds for a rethink of the theory in humans.
This doesn't necessarily mean evolution is a flawed theory in humans, it just means it didn't quite work as they thought a couple months back.
But that is the beauty of science.







