If this fellow is in your well water, don't quench your thirst. This is a scanning electron microscope image of Giardia muris, a protozoan parasite that causes nasty diarrhea when it infects the intestines of its hosts.
Where are the ants carrying all those leaves? by kqedscience: Humans have been farming for around 12,000 years. Ants have been doing it for 60 million. Ants don’t eat leaves. They use them to grow white tufts of nutritious fungus to feed their offspring. Their success as farmers has made leafcutter ants into fungus tycoons, complete with their own underground cities and huge half-inch soldiers to patrol them. All new video from Deep Look, a pro