Deep-sea battery comes to light

Microbes fuel electrical current at hydrothermal vents

SAN FRANCISCO — Scientists have discovered an unusual kind of battery at the bottom of the Pacific Ocean: a living one, fueled by microbes that live near hydrothermal vents.

Microbes feeding off hydrothermal vents at the bottom of the Pacific Ocean transform the chimneylike structures (shown here) they inhabit into natural batteries.