8 Scientific Theories That Totally Change Captain America: Civil War

5. Spider-Man

Given what we know about genome editing, the idea of somebody being gifted with Spidey senses after being bitten by a radioactive spider is not quite as mad as it once seemed (although perhaps still not exactly "possible").

It could be that the altered genetic material in the spider's venom penetrated Peter Parker's cells and begin to mutate his DNA to making him stronger, faster and more agile (although the wall-climbing thing is still a mystery).

It is, however, the spider silk that is spot on for accuracy.

Spider silk is a truly remarkable substance. It has the same tensile strength of steel, but with a fraction of the density. Scaled up to a rope-like thickness, the silk would be more than capable of supporting the weight of a human as they go swinging through the city, as well as making near inescapable bonds for any bad guys.

Although shooting it from the wrist is a bit fanciful, scientists have actually managed to genetically engineer goats to produce spider silk in their milk.

That said, we'd hate to imagine where a teenage boy might produce it from.