Why Are Europeans White? (E1) – a knol by Frank W Sweet

There is only one spot on the planet where grains will grow despite sub-arctic sunlight.

It is where the warm waters of the Gulf Stream wash ashore. The Baltic is the only place on earth where ocean currents keep it warm enough to grow grain despite dim sunlight.

http://knol.google.com/k/why-are-europeans-white-e1#