Heart disease and depression seem like unrelated ailments. However, new research is finding that the occurrence of one can result in the manifestation of the other. On this program, Dr. Lawson Wulsin discussed the guid between heart disease and depression.

The theory of evolution proposed by Charles Darwin has served as the basis for modern biological research. But, is evolution at odds with religious beliefs? On this program, Prof. Francisco Ayala from U.C. Irvine discussed Darwin and Religion.

While most might experience revulsion by fecal matter, the constitution of poo can actually tell a lot about gastrointestinal health. On this program, Dr. Anish Sheth and Josh Richmond discussed the science of poo.

Collaboration in business is important for the development of ideas and products. Technological innovations are facillitating this process. On this program, Don Tapscott discussed Wikinomics and how mass collaboration is changing business.

Nitric oxide is a ubiquitous molecule in the body that is involved in several important physiological processes. However, diseases may arise when the regulation of nitric oxide is disrupted. On this program, Prof. Martin Pall from Washington State University discussed the role of nitric oxide in disease.

Space travel has typically relied on conventional high energy routes, known as Hohmann Transfers, to move their payloads. However, low energy routes do exist and are currently being explored. On this program, Dr. Ed Belbruno from NASA discussed low energy space flight.

Surgical procedures, while often necessary for curing ailments, can sometimes be over-prescribed by clinicians. On this program, Peter Moore, editor at Mens Health, discussed unnecessary surgeries.

The invention of the telescope 400 years ago opened a window to the universe that continues to amaze and enlighten. On this program, Dr. Geoff Andersen discussed the history and invention of the telescope.

How does the US stack up to others in energy efficiency? Arthur Rosenfeld joined us again to discuss some of the encouraging lessons in energy development around the world.

Cancer is a disease that strikes fear by its mere mention. But, rapid advances in medical science are developing new treatments. On this program, Prof. David Nathan from Harvard MGH discussed new cancer therapies.