gecko Animals Biology Engineering Physics 

Why Spiderman Can’t Exist, but a Gecko Can

By Kate Stone With all due respect to Spiderman, it turns out that physics is against our wall-crawling, web-slinging hero. There is a size limit on who or what can stick to walls: the size of a gecko. David Labonte and his team at the University of Cambridge Department of Zoology have been wondering why geckos are the largest animals able to scale smooth vertical walls. Geckos have highly effective and complex foot pads that they use to climb smooth, vertical surfaces. However, anything larger than a gecko would need…

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