How cool is this? Metin Sitti, a researcher at Carnegie Mellon’s Nano-Robotics lab has built a robot patterned on water striders, that can walk – not float – on water and that can propel itself forward the same way that water striders do. The “bug” contains about $10 worth of material.

Mike Crissey, writer for Associated press wrote:

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 Although it’s only a basic prototype, Sitti and other researchers imagine that his water-skimming robot could be used on any still water. With a chemical sensor, it could monitor water supplies for contamination or other toxins; with a camera it could be a spy or an explorer; with a net or a boom, it could skim contaminants off the top of water.
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