No natural science is closer to man than biology, the study of living things, which time and again attracts attention with new, spectacular findings. But to fully understand complex relationships and processes as well as to make sense of the daily news about clones, stem cells and genetically modified food, one needs precise knowledge. This book provides it. It explains basic biological facts in a way that is both competent and easy to understand, introduces the scientists who have researched specific topics and answers the most frequently asked questions. An essential tome that makes a decisive contribution to the better understanding of the world around us.