In his book, Roenneberg points out a whole range of different aspects of sleep, ranging from day-to-day life to the evolution of sleep. But the book doesn't merely focus on sleep in itself, it encompasses the biological clock and the time of day when we sleep best and when we can't and ...

Africa was the cradle of Man. All the major changes in body form and function which characterize Man took place on the African savanna, where wildlife was abundant and varied. There, our earliest ancestors attained the upright stance, the feet for walking long distances and the skillful hands for ...

The ›dtv-Atlas of Mathematics‹ is a two-volume guide to modern mathematics and its most recent advances. The atlas sets out the basic principles of mathematics, followed by an introduction to all the main branches of study and their associated theories and hypotheses. Volume 1 presents the ...