An engaging, realistic account of when our people met up with an entirely different set of humans - the Neanderthals. Genetic and archaeological data indicate that this actually happened in southern Europe about 45,000 years ago when mammoths and saber-tooth tigers roamed the land. Science Corners on many pages feature amazing topics such as how genetics show that most of us are part Neanderthal, the earliest musical instrument ever found, and what factors likely caused the demise of Neanderthals.