Members of the Bajau people in Indonesia carry a gene variant that leads to a bigger spleen, supplying extra red blood cells when they go fishing and collecting sea cucumbers or black coral under water, for hours per day. The Bajau have thus adapted to extreme conditions imposed by low oxygen conditions, experienced from generation to generation. It thus seems that natural selection, similar to what evolutionary biologists found in people living at high altitudes in a low oxygen environment, continues to work on human populations.

Read the full story: Science Magazine
Scientific publication: Cell