Hottest Fixer: Undersea-vent microbe sets nitrogen record

A spherical microbe from the weird world of hot-water ocean vents has trumped the nitrogen-processing powers of all organisms previously studied.

IN HOT WATER. Deep undersea near the Axial volcano in the northeast Pacific, the seafloor releases jets of scalding water that carry unusual microbes, including nitrogen fixers. NOAA Vents Program

Like some soil microbes and bacteria living in pea plants and their relatives, the microbe known as FS406-22 turns plain nitrogen (N2) into a form that other living creatures can use, explains Mausmi P.