The text is busy in this book, Becoming Bionic and Other Ways Science Is Making Us Super by the author, Heather Camlot. It fills the page with few pauses or at least easy stopping points. Once you start a section, you probably should finish it.
The illustrations, by Victor Wong, are cartoon-like, but not in a goofy way. They are also busy, and due to having read this via an online reader copy (though it is current out), the flow of them did not work completely for me (such as timelines were awkwardly broken up). Overall, they are good, but I was looking for something different with them. However, their brighter colors do fit the tone of the text.
The idea is nonfiction. We learn the facts, but in a mostly accessible manner. The main thing I enjoyed was that they take superhero and villains (though a few are not completely mainstream/popular culture) to show you what could be possible and what is not. Such as could we have super strength? Or -ray vision? And is telekinesis even humanly possible? And even things like there are differences between “good brainwashing” and “bad brainwashing.” The history of “super people experimentation” was one of my other favorite points as it shows this is not a new thing or even a 20th and 21st century concept. Mankind has always tried new ways of making real life super people. However, while they do touch on the ethics of somethings (after all if we were invisible how many people would use it for evil? And of course, mind control goes without saying), but is not covered as much as I would have liked.
The ages are at least eight and up, but with a six or seven-year-old you could adapt to their level of understanding. It could go up to a young 12-year-old reader. Just take your time reading, there is a lot!
