The next time you go wild swimming, whether in a lake, river or sea, you are probably sharing the water with one of your tiniest, yet closest relatives. Choanoflagellates, like most single celled ...

At head of title: DK Smithsonian. Author from title page verso. "Our world is filled with extraordinary diversity, from amoebas to zebras, from tiny toadstools to giant oaks. The wonders of the ...