Carnegie Mellon researchers have created small robots that walk on water, says this Scientific American story:
... What started as a class project three years ago ended up as insectlike mechanical robots with four to sixteen legs. The "bugs," two to six inches long and weighing a few grams, can scoot over water [...] [T]he robots use water's surface tension to amble on their spindly legs exactly like water striders, the insects that motivated the challenge.
How interesting and timely... S. and I were just discussing how we could invent a similar apparatus that would enable humans to walk on water... and thereby become millionaires (that was our only real motivation -- that, and perhaps making bridges obsolete).
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