When comic book superheroes first appeared, their powers came from other planets, strange mutations or experiments gone wrong. The readers of these adventures enjoyed them knowing they would never be able to be invisible, or have the strength of ten men, bones of steel or to make a copy of their brain… But those who imagined the universe of super heroes and villains did believe it was possible. And so, using sixty characters as examples, this book shows how science has managed to recover memories from a dead brain (one of the Green Lantern's powers), to create new elements (like the adamantium of Wolverine's bones), to build a body or artificial life from artificial organs -as Richard Reeds of the Fantastic Four anticipated - or design a serum to convert ourselves into super athletes, like Captain America. And all this in a little over 40 years.