"Basher Science: Extreme Biology" by Simon Basher. Ages 10 & Up. We love the Basher Science series! Learn about the amazing research that is revolutionizing biology, from advances in medicine to genetic engineering. Meet the world’s toughest bacterium and a biologically immortal flatworm whilst learning about epigenetics, superbugs, nanomedicine and cloning. Extreme Biology is a compelling guide to developments at the very forefront of science.