Publisher's Synopsis
This six-volume set covers major areas of science including: biology, genetics, microbiology, astronomy, chemistry, physics, engineering, technology, geology, weather, archaeology, psychology, mathematics and medicine.;This edition includes revisions and updates to more than 250 articles. Reflecting the fast pace of change in science, many articles, including articles on topics such as AIDS, the human genome project and stem cells are completly revised in the latest edition. In addition, more than 160 new topics reflect increasingly important discoveries in genetics, microbiology, immunology and the physical sciences.
