Hundreds of weird, wacky, and unexpected science questions answered by experts from around the world. Just how old is dirt, really? Are men or women more likely to be hit by lightning? What do whales sing about? Why don't we have our jetpacks or flying cars yet? If I had to, could I survive on cat food alone? ...and 224 more curious questions answered by the world's smartest people Ever wondered if you could beat a T. Rex in an arm-wrestling match?...