Sugar kelp supports weight loss; edible spoons help the environment. Sugar also supplies our body with energy.
Engineers from Munich’s Technical University and MIT have developed an energy source for implants, which can be ‘nourished’ by the body’s store of glucose.
Glucose contains electrically-charged particles, and chemical conversion processes in their new sterile fuel cells set these free.
The negatively charged particles flow to an external circuit while their positive counterparts combine with air particles to form water molecules that are processed by the body.
At just 400 nanometres thick and 0.3mm wide, the fuel cell can supply up to 80 millivolts, enough to power a pacemaker.
Assuming it doesn’t power itself or even dissolve of its own accord.