Geckos get stickier as the humidity rises

Geckos are well known as expert climbers, they're the biggest creaturesthat can hang unassumedly from a ceiling. Now, as part of theinternational effort to understand how geckos achieve their invertedtrick, researchers at the Max Planck Institute for Metals Research inStuttgart and Saarbruecken, Nuernberg-Erlangen and the ETH Zurich havedemonstrated that the "stickiness" of the soles of a gecko's feetincreases as the humidity rises. The researchers suggest that theirmicroscopic analysis could open up new avenues of research intoartificial adhesive systems.