Humans farm. So do ants and termites. But amoebas? Indeed they do, say scientists who have studied a kind of amoeba that might be the world's tiniest farmer. From Ed Yong:
The amoeba, Dictyostelium discoideum, is also known as a slime mould, but scientists who work with it sometimes use the more affectionate name of Dicty. Dicty spends most of its time as a single cell, oozing through the undergrowth in search of bacteria to eat. When they run out of prey, the amoebas unite to form a many-celled mobile slug. When the slug finds a good spot, it stretches upwards to form a ball at the end of a stalk. The ball is loaded with spores, which eventually blow free on the wind. When they land, they hatch into new amoebae and the life cycle begins again.
Scientists pieced together Dicty’s life cycle decades ago, but it still carries ...