Highly read on pubs.acs.org in March

A fuel cell implanted in a living snail can generate electrical power for several months.

Implanted fuel cells that are driven by glucose generated by their host could one day power medical devices in humans or environmental sensors in animals. Evgeny Katz at Clarkson University in Potsdam, New York, and his colleagues made the electrodes of their fuel cell out of densely packed carbon nanotubes, and attached glucose-oxidizing and oxygen-reducing enzymes to them. The authors then implanted the electrodes into a snail (Neohelix albolabris). After decreasing the rate of current extraction to match the snail's slow glucose transport and metabolism, they got continuous electrical output for an hour. The fuel cell remained functional in the snail for several months.

J. Am. Chem. Soc. 134, 5040–5043 (2012)