Biochemistry! Linguistics! Rocketry! Evolutionary psychology! Palaeolithic archaeology! Geek out here with hard science!
Note that discussions in this category need to be based on real science. This means that any not extremely widely accepted claims you must back up with scientific background (or at least in the case you are challenged on the information you posted). In the case of exobiology a special exception is made for using widely accepted ideas by exobiologists. (Crazy) speculation about what might be possible is not allowed in this category. Claims that are not based on real scientific knowledge will be deleted.