(Why really happens if you get swallowed by a whale, are shot from a cannon or go barreling over Niagara...)
Silly science at its most entertaining. If you've read What if?, this is very much like an expanded version. All the insane questions a 12 year old might come up with? - a good portion of them are probably here. While very entertaining for adults, this would, in fact, make an excellent book for kids, turning them on to how science isn't all boring.
I'd have rated it even higher, except there's a high proportion of questions regarding space and those who know me, know that space bores me and these entries slowed me down and had me contemplating folding laundry. Luckily none of the entries are longer than 2-3 pages and there's a nice mix of terrestrial questions that were both informative and interesting (to me). Though, for the record, I probably didn't need to know the details of how dangerous a paper cut can be, and I really, REALLY didn't need to know about Botulism H.