science

Ben Weiss, Professor of Planetary Science, MIT explains why the Moon and its core are so important for an accurate account of the evolution of the solar system. He also shows Moon rocks and describes how scientists analyze them.

Science for the Public 4/17/12. Susanne Freidberg, Ph.D. Prof of Geography, Dartmouth College. The globalization of our food market --production, processing, transporting and storage-- has an enormous impact on the environment. Calculating that impact is complicated and very political.

Emery N. Brown, M.D., PhD, Harvard Medical School and MIT Cognitive Neuroscience: Dr. Brown, a leading researcher in anesthesiology whose work has received considerable publicity lately, discusses the differences between types of unconsciousness and what these distinctions reveal about the structure of the brain.