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  1. Hunter-gatherer populations were much less dense than later agriculturalists. The variety of their food supply protected them from crop failures and their sparseness reduced the spread of infectious diseases. Hunter-gatherers were healthier and worked less than early agriculturalists. Why didn't their numbers increase up to the same level of Malthusian misery? Their numbers may have been limited by violence between groups. Agriculture is...more

  2. In this lecture, Professor Kagan focuses on the causes of the Peloponnesian War and the possible motivations for Thucydides' book, The History of the Peloponnesian War. Concerning the first point, Professor Kagan parts ways with Thucydides and argues that the war was not inevitable and that the Athenians under Pericles followed a policy of deterrence, which was aimed at peace. Similarly, he points out that there were a number of Spartans...more

  3. August 9, 2007 presentation by Russ Altman for the Stanford University Office of Science Outreach's Summer Science Lecture Series. There are a number of causes for variation in drug response across the population, but differences in genetics are an important factor. Russ Altman, Professor & Chair of Bioengineering and Professor of Genetics and Medicine, discusses how variations in genetics can alter the "typical" response as well as...more

  4. Guest lecturer William Ryerson is President of the Population Media Center which produces radio and TV serial dramas in developing countries that aim to effect behavior change on women's status, family planning and AIDS. Working with governments and in-country media professionals, these melodramas run for hundreds of episodes and are watched by millions. Careful research shows major changes in audience knowledge, attitudes and practices.

  5. Geography is very important in ecology. Two major systems have been designed to model this, island biogeography and metapopulations. The idea of metapopulations is more recent, and has emerged as the dominant theory. Metapopulations are populations in multiple neighboring areas. The population of a species in any individual area may go extinct, but the metapopulation still survives. The theory of metapopulations has gained momentum in...more

  6. Google tries to keep an entertaining and enriching corporate culture by taking company trips and implementing a dog-friendly policy.At the same time, the company tries to maintain an entrepreneurial culture by forming small teams that act like individual startups. The founders have discovered that the groups tend to become more traditional as they grow larger.

  7. March 4, 2009, Richard Morse states that coal is the largest growing source of energy and that regulation and policy are beginning to play a larger role in the economy of coal power. Morse also discusses the heavy reliance on coal by developing countries and the need to understand and evaluate all mitigation options.

  8. Just twenty percent of the members in any group or social system own eighty percent of the assets, indicative that scale indicates a growing concentration of power. The top 2,000 companies employ and influences a million people in the modern world, says author David Rothkopf. With cross-ownership and networking in all circles - business, military, religion, and the Internet among them - a few succeed, but the majority of participants...more

  9. Perry illuminates the common thread of leadership styles and ethical responsibilities in an industry and a government organization. He also observes that practices across the industry and the government bring insights about special techniques and social responsibilities that one can apply in both kinds of organizations.

  10. If we don't recognize that the unequal distribution of wealth is unsustainable, then, perhaps, says author David Rothkopf, more sinister political tensions and divisions will ensue. He advocates that the planet needs to reflect upon why we have one set of rules for our geographic community, and a different set of rules for institutions, among them the for-profit sector. Only when we hold the powerful players in economics responsible for...more

  11. Tarun Khanna, Professor at Harvard Business School, argues that the old equation that government = inefficient does not hold unilaterally but depends on the context. To illustrate, Khanna describes the evolution of the Communist Party of China and its efforts to co-opt entrepreneurs so that now the government and entrepreneurship is very closely integrated. In contrast, Khanna suggests that in India entrepreneurs keep their distance from...more

  12. Sheer brainpower, strength in numbers, and good old fashioned networking is how the nature of world influence is established. Skewed and disproportionate, modern power structures that regulate global problems happen only when the elite meet, says author David Rothkopf. And decisions made based on these meetings often do not adequately represent the people or the interests that they are meant to serve.