On my latest podcast, I talk to Forest Rohwer, a San Diego State University scientist, about those rain forests of the sea, coral reefs. Rohwer studies the criss-crossing partnerships that keep corals alive–the animals that build the reefs, the algae that harness sunlight for them, the bacteria that make compounds and recycle waste, the fish that scrape off parasitic algae, and on and on. When you consider the hundreds of microbe species that live in each reef, corals and our own bodies become surprisingly similar. Have a listen.