Sorry folks, you can all stop asking. Humans won't evolve into Spider-Man.
The devastating news came out of a study from a Queensland researcher and his former colleague at the University of Cambridge, who discovered humans would need US size 114 feet to stick to walls like Spidey.
How insects walk upside down
Insects have sticky pads on their feet but could the same process be used to turn a human into spiderman? University of Cambridge
University of the Sunshine Coast animal ecophysiology lecturer Christofer Clemente worked with lead author David Labonte in Cambridge to catalogue 225 different climbing species.
They studied spiders, frogs, insects and lizards and a mammal from mites through to geckos to find out why the native Australian lizard was the biggest species capable of clinging to walls with "sticky" pads on its feet.
"There really are two options if you want to get big and you still want to stick to a wall," Dr Clemente said.
"You can either get relatively bigger pads, so the pads that you have need to increase in size relative to your body or the pads you have, have to get stickier."
He said it appeared most species had evolved down the "bigger pads" route, meaning while the tiny mite's pads took up just 0.02 per cent of their surface area, the largest geckos needed more than four per cent.
Extrapolated, that meant for humans to mimic Peter Parker's alter ego, their feet would need to take up 40 per cent of their surface area.
While the study, published in the Proceedings of the National Academy of Sciences on January 18, dashed the hopes of comic book fans everywhere, Dr Clemente said it opened the door to plenty of other interesting innovations learning from nature.
"Say if we want to build a robot that's going to climb up the outside of a building, it's a smooth surface, or say go into a disaster area, where an earthquake has been and climb around in a disaster area," he said.
"We probably want something that's a bit bigger than a gecko but a bit smaller than a human.
"And so that's where the sort of practical applications for this sort of research can really lead us down.
"We understand where our limits are and also what we have to engineer and the goals we have to achieve."
Researchers in the US previously designed a gecko-inspired human climbing system to allow humans to emulate the webcrawler.