Discover how Galileo worked out his scientific theories of motion and inertia, why Isaac Newton gets the credit for them, and what the discovery of DNA meant. All the big scientific ideas are brought to life with pithy quotes and step-by-step 'mind maps' - from evolution and continental drift to black holes and genetic engineering, showing how the ideas of famous scientists have affected our understanding of the world.

In these 24 lectures, The Great Courses teams up with the Smithsonian’s National Zoo and Conservation Biology Institute, to take you behind the scenes of the animal world. Dr. Moore has crafted a wonderful introduction to zoology that brings you up close and personal with a breathtaking variety of animal species through the eyes of a trained zoologist.

Lachlan Macquarie is credited with shaping Australia's destiny, transforming a harsh, foreboding penal colony into an agricultural powerhouse and ultimately a prosperous society. He also helped shape Australia's national character. An egalitarian at heart, Macquarie saw boundless potential in Britain's refuse, and under his rule many former convicts went on to become successful administrators, land owners and businesspeople.

Dr. Catherine Kleier invites us to open our eyes to the phenomenal world of plant life and to the process she calls “Natura Revelata”, the joy of celebrating and learning from the secrets of nature. As Dr. Kleier shares her knowledge with contagious excitement for her subject, she emphasizes the middle ground: Instead of focusing on cell microbiology or the study of ecosystems and habitats, she stresses the basic biology, function, and the amazing adaptations of the plants we see all around us. 

Chemistry and Our Universe: How It All Works is your in-depth introduction to this vital field, taught through 60 engaging half-hour lectures that are suitable for any background or none at all. Covering a year’s worth of introductory general chemistry at the college level, plus intriguing topics that are rarely discussed in the classroom, this amazingly comprehensive course requires nothing more advanced than high-school math. Your guide is Professor Ron B. Davis, Jr., a research chemist and award-winning teacher at Georgetown University.