Slow-moving ocean and river currents could be a new, reliable and affordable alternative energy source. A University of Michigan engineer has made a machine that works like a fish to turn potentially destructive vibrations in fluid flows into clean, renewable power.

"For the past 25 years, engineers — myself included — have been trying to suppress vortex induced vibrations. But now at Michigan we're doing the opposite. We enhance the vibrations and harness this powerful and destructive force in nature." -- Michael Bernitsas, VIVACE Developer and Professor, Department of Naval Architecture and Marine Engineering, University of Michigan