Andrew Knoll is the Fisher Professor of Natural History at Harvard University. He has been a member of the Harvard faculty since 1982, serving as both Professor of Biology and Professor of Earth and Planetary Sciences. Professor Knoll's research focuses on the early evolution of life, Earth's environmental history, and, especially, the interconnections between the two. He has conducted field research on five continents and for two decades served on the science team for NASA's MER mission to Mars.
TV’s original home shopping host Bob Circosta discussed the early days of home shopping and how it has become a billion-dollar industry over the past 44 years, as well as what he has learned about sales and what motivates people to buy things they see on TV.