Soulskill from the now-taking-test-subject-applications dept.
joshuarrrr writes "Researchers in Switzerland have tested small turbines designed to fit inside a human artery, like an implantable hydroelectric generator. The turbines can draw about a milliwatt of power, which would be enough to run a pacemaker. The problem is that the turbines tended to create turbulence, which can cause blood to coagulate into clots. Competing systems avoid the turbulence but have trouble generating enough power."
Humanity has the stars in its future, and that future is too important to be
lost under the burden of juvenile folly and ignorant superstition.
- Isaac Asimov