"Humans Still Evolving as Our Brains Shrink "

There has been debate on whether or not humans are still evolving. The short answer, is yes we are, stupid.

Some changes are:

• The human brain is shrinking. Using skull measurements, it shows that the brain has been getting smaller in the last 5,000 years--about 150 cubic cm, or "roughly 10%." This is true regardless of the population measured. Researchers theorize this is because of societal differences such as a movement away from the hunter-gatherer lifestyle and more specialization use of our brains. Basically, maybe we don't need all those extra brain space.
• Humans have evolved some defenses against malaria. Malaria is caused by a parasite that is spread by mosquitoes, enters the bloodstream and infects red blood cells. One defense is sickle cell anemia, which deforms the cells and prevents parasitic infection. Interestingly, an Indian-Pakistani version has also evolved.
• A lot of people are lactose intolerant, but lactose tolerance only evolved about 7,500 yrs ago in Europe so that we could take advantage of non-human milk. Also, some genes have shown to allow resistance to type II diabetes.
• More analysis has shown that there has been many changes in our genome in the last 40,000 yrs. This may have be in response to our change in diet that used to be based on hunter-gatherers.