Robot walks on water

Water striders, insects that walk on the surface of the water, may never set foot on land in their lives, and yet they’re not swimmers. Over the past million or so years, this insect—sometimes called a water skater—has optimized its use of surface tension to balance its 0.01-gram body on lakes, ponds, and even oceans.

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<p><a href="http://www.physorg.com/news103362097.html">Robot walks on water</a></p> <p>Water striders, insects that walk on the surface of the water, may never set foot on land in their lives, and yet they’re not swimmers. Over the past million or so years, this insect—sometimes called a water skater—has optimized its use of surface tension to balance its 0.01-gram body on lakes, ponds, and even oceans.</p>