In the Middle Stone Age, change happened everywhere, but at different times in different places. Chapters cover how Mesolithic people shaped flints into scrapers and sharp tips for arrows and spears, how they began domesticating animals, how they started building more permanent settlements, and how they drew other humans, maybe as an early way of writing. Each chapter includes attention-grabbing photos and fascinating facts. Sidebars go deeper, and prompts invite readers to think for themselves. A Timeline of the Mesolithic Era gives a big-picture view.