Get inspired by Richard Alley’s optimistic view on global warming. This world-renowned paleoclimatologist does have some bad news about climate change, although he’ll convince you that we not only have the tools to solve the problem, but we can make money doing it too.

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With a voice that could move a mountain, orator Eloma Simpson Barnes practically channels Martin Luther King, Jr., as she performs one of his speeches. She emulates King’s cadence, intonation and enunciation in this inspirational reminder to stand up for what you believe in.

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Champion of the Earth honoree and biomimicry pioneer Janine Benyus has transformed the way we think about innovation and design. Benyus challenges us to study nature’s best ideas, then imitate its designs and processes to solve some of our greatest human challenges.

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New projects in Brazil and India: David Bornstein talks about a project to bring electricity to poor people in Brazil: single wires going to houses, grounded in the soil, low voltages. The project is also bringing solar panels to rural areas, renting them for what people generally pay for candles, kerosene, etc. He also talks about "child line" in India, now in 55 cities. It's a number you can call if you see a child in distress.

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Renowned primatologist, psychologist and ethologist Frans de Waal wants to convince us we’re all basically apes, saying we’d be much happier if we paid attention to some of the basic principals of cooperative social behavior that even primates are sensitive to. Watching monkeys engage in peace-making, power relationships and reciprocity is a potent reminder of just how alike we are.

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If you think this is the first time humans have grappled with climate change, you weren’t paying attention in archeology class. Join world-famous archeologist Brian Fagan as he travels back in time to teach us a lesson that ancient civilizations learned the hard way: adapt or die.

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Follow explorer Ben Saunders’ solo, unsupported journey across the frozen Arctic Ocean and grasp the true limits of human potential. At 26, he’s the youngest person to ski to the North Pole and only the fourth in history to accomplish the feat. He’s also witness to climate change at work.

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What makes us happy?: Societies flourish and people are most content when they are faced with fewer choices and more constraints argues psychologist Barry Schwartz. We are tortured by the idea of having it all – “Impossible!”, he says.

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