QUIRKY WORLD ... Superhero Spider-Man is not so super after all

Scientists have discovered that the adhesive footpads that make spiders, tree frogs, and geckos such amazing climbers are limited by body size. They simply would not work for a creature as big as a human — unless he had impossibly large feet.
A person would need sticky pads covering 40% of the body’s surface to scale skyscrapers like Spider-Man, according to the researchers.