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James Hansen: Why I Must Speak Out About Climate Change

Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future.


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Why Good Leaders Make You Feel Safe

What makes a great leader? Management theorist Simon Sinek suggests, it's someone who makes their employees feel secure, who draws staffers into a circle of trust. But creating trust and safety - especially in an uneven economy - means taking on big responsibility.

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Bryan Stevenson: We Need to Talk About an Injustice

In an engaging and personal talk -- with cameo appearances from his grandmother and Rosa Parks -- human rights lawyer Bryan Stevenson shares some hard truths about America's justice system, starting with a massive imbalance along racial lines: a third of the country's black male population has been incarcerated at some point in their lives.

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Ai Weiwei: 'Life is never guaranteed to be safe'

Ai Weiwei, the Chinese artist who will soon take over Tate Modern's Turbine Hall, on why he wants to tell people that it's OK to speak out.

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Lucianne Walkowicz: Look Up For a Change

Lucianne Walkowicz explains the importance of preserving our dark night sky from the perils of light pollution and other lesser-known factors.

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Splitscreen: A Love Story

Can two people who live on opposite sides of the world have anything in common? This is the story of two parallel lives, one in New York and one in Paris and the journey that will lead them together. Told simultaneously through the eyes of both characters.

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