As the twentieth century began, there were no airplanes, no radio stations, no mass-produced cars--even the zipper had yet to be invented. Within a lifetime, scientists had unlocked some of nature's deepest secrets, leading to home computers, genetic engineering, landings on the moon, nuclear weapons, and Velcro. For better or for worse, no other period in history has been so changed by the advance of science.
With over 300 informatively captioned...