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Published online 25 July 2001 | Nature | doi:10.1038/news010726-7
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These feet were made for walking
A toy that can't stand still helps explain how we move, and how robots might do the same.
Cyclists, stilt-walkers and drunks know the feeling: you're okay moving, but fall over when you stop. Robot engineers will be pleased to hear that motion alone - not friction, slip or any other effect - could be the drunkard's secret1.
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