Some types of bacteria living in seafloor mud can generate enough electricity to power small electronic devices, field tests have shown. The months-long trials may herald a new generation of fuel cells that can supply reliable low-voltage power to future networks of ocean-bottom sensors in long-lived instruments for which changing batteries would be impractical, if not impossible.
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.