Interesting article about horizon program which is on BB2 tonight... http://www.bbc.co.uk/news/science-environment-12535647
Some snippets from article belowHorizon: Are We Still Evolving?
BBC Two at 2100 on Tuesday 1 March 2011On Milk Consumption
"The most obvious example of this is lactose, the sugar in milk. Some 10,000 years ago, before humans started farming, no one could digest this beyond a few years of age."
"But today, the rate of lactose tolerance in different parts of the world is a clue to the different histories of farming across the globe. While 99% of Irish people are lactose tolerant, in South East Asia, where there is very little tradition of farming, the figure is less than 5%."Procreation
In the developed world today, almost everyone lives long enough to pass on their genes, but many of us choose not to.
Some people have three children, and some people have none, so natural selection may be working in a different way.
The realisation that people in the developed world are in effect choosing to prevent their genes from surviving beyond them has led evolutionary biologist Stephen Stearns to look at evolution in the current generations in a radical way.Culture & Evolution
"We see rapid evolution when there's rapid environmental change and the biggest part of our environment is culture, and culture is exploding," says Prof Stearns.