This is a quick journey through the subjects of oil formation, peak oil, energy, economic growth, and resource depletion.

Bruce Soltani interviews Dr. James Schlesinger, Former Secretary of Defense, Secretary of Energy, and CIA Director on the topic of Peak Oil and the future of the United States Economy.

Future Fat Fighters-2050

When could society tackle the twin epidemics of starvation and obesity? 50 years? 100 years? What about today? Geoff von Maltzahn from Flagship VentureLabs explains how their team harnessed the power of technology, biology, and economics to launch Pronutria- a company that takes a system approach to the twin crises of malnutrition and is developing a new solution with the potential to improve nutrition globally in a sustainable, cost-effective way.

Could the bacteria in your stomach be making you fat? Studies point to a specific microbe that causes the body to hoard calories. A new test can reveal if you have it, and now researchers are looking to a common medicine as a possible fix.

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Lewis Kuller will discuss how obesity is an example of a common source epidemic due to changes or introduction of new behaviors, i.e. lifestyles, which result in introduction of new "agents," such as fast foods or calorically dense foods, into a receptive environment. The development of technology for mass production of low-cost, high-calorically dense foods has resulted in economic advantage, mass marketing, and social acceptability. Over time, this has caused increased risks of obesity, diabetes, cardiovascular disease, and cancer, etc. Successful control of the obesity epidemic requires an understanding of the interrelationship between the host, the agents and the environmental factors.

The first part of the Summit featured keynote remarks by Dr. Manuel Peña, Special Representative of the Pan American Health Organization. Dr. Peña set the global context to the obesity epidemic, focusing on three key areas of interest: 1) overview of current trends and statistics, 2) lessons learned and 3) future solutions.

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The second part of the 2011 Global Health Summit featured a panel exploring the national and local implications of the obesity epidemic.

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Clem Bezold, co-founder of the Institute of Alternative Futures and author of more than ten books about the future, discusses preventing and reversing diabetes and obesity in the future.

In this fiery and funny talk, New York Times food writer Mark Bittman weighs in on what's wrong with the way we eat now (too much meat, too few plants; too much fast food, too little home cooking), and why it's putting the entire planet at risk.