This or That: Walk on Walls

Geckos are famous for their skill at skittering up any surface—even glass. It's not gluey goop or suction cups that make these little lizards stick. Instead, their toes are coated with millions of microscopic hairs that adhere to surfaces at a molecular level, creating a bond so strong that one gecko could support 280 pounds (127 kg). Geckos lose their grip on wet surfaces, but hey—every superhero has a weakness!


See what you'd have gotten if you chose superspeed instead.


Photograph by

Santiago Fdez Fuentes, Photolibrary