Here is a current example of modern human evolution:
http://phreeque.tripod.com/grady_stiles.html
It's a tripod site, so GFY will probably kill it, but here we have a mutation that is passed on to future generations. That is all evolution is. If the mutation benefits the spreading of those genes, it will propagate - if it is of no benefit or detrimental to the spreading of those genes, the line will die off.