Every year, microbes produce hundreds of millions of tons of methane, a greenhouse gas that’s more potent than carbon dioxide. Scientists had thought the job was done exclusively through methanogenesis. But in the journal Nature Microbiology, a research team led by the University of Washington’s Caroline Harwood lays out an alternate method that makes use of a backup enzyme called iron-only nitrogenase.
Aerospace and science editor for GeekWire, creator of Cosmic Log, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.