science for the public
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.
Professor Gang Chen, MIT explains several types of solar energy, with emphasis on a widely acclaimed solar thermoelectric device that his lab has developed. Dr. Chen gives a demonstration of how the device works, and explains that such technology is very popular and inexpensive in Europe and China.