Geckos are superb wall-crawlers. These lizards can scuttle up sheer surfaces and cling to ceilings with effortless grace, thanks to toes that are covered in microscopic hairs. Each of these hairs, ...

With theaters full of Spider-Man and insurance commercials full of geckos, the human urge to walk on walls and ceilings is booming. Geckos really do cling to walls and ceilings successfully.

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