Fly-eating robot powers itself

"Scientists at the University of the West of England (UWE) have designed a robot that does not require batteries or electricity to power itself.

Instead, it generates energy by catching and eating houseflies.

Dr Chris Melhuish and his Bristol-based team hope the robot, called EcoBot II, will one day be sent into zones too dangerous for humans, potentially proving invaluable in military, security and industrial areas.

Melhuish, who is director of the Intelligent Autonomous Systems Lab at the UWE, told CNN that the EcoBot II was a result of a quest for an intelligent robot that could function without human supervision.

"That means they need energy. It is one thing to have a robot getting its energy from a household socket, or maybe from the factory floor, but it is another thing when the robot goes outside buildings," he said.

"Of course, there is solar energy outside. Little robots can use solar energy to move about. But mostly, if there is not a lot of solar energy about, you have to give robots batteries -- which eventually run out."

The EcoBot II powers itself in much the same way as animals feed themselves to get their energy, he said.

At this stage, EcoBot II is a "proof-of-concept" robot and travels only at roughly 10 centimeters per hour."

From CNN.com