Uncover the intriguing, and often mysterious, world of science in Lerner's Discovery series. From late-breaking hot topics to conundrums whose answers have been concealed for centuries, books in this series provide in-depth coverage of science topics that young readers everywhere will find fascinating Supports the national science education standards Unifying Concepts and Processes; Systems, Order, and Organization; Unifying Concepts and Processes: Evidence, Models, and Explanation; Unifying Concepts and Processes: Constancy, Change, and Measurement; Unifying Concepts and Processes: Evolution and Equilibrium; Unifying Concepts and Processes: Form and Function; Science as Inquiry; Life Science; Earth and Space Science; Science and Technology; Science in Personal and Social Perspective; and History and Nature of Science as outlined by the National Academics of Science and endorsed by the National Science Teachers Association.