Examining the first half of the 20th century, this volume surveys the most significant scientific discoveries of an era that witnessed dramatic and unsettling changes in science. Articulating the development and impact of science from one century to the next, Modern Science: 1896-1945 deals with the significant work of scientists such as Bohr, Einstein, and Planck. It also looks at key discoveries in the physical and biological sciences and discusses the questions raised by two world wars about the humanity and the ethical use of the products of scientific discovery.