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Meet people and learn about places and programs working to change the world.
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A gathering of elders takes on AIDS, TB, climate change and more.
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Designer Blake Mycoskie donates shoes to poor children overseas.
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Is your portfolio socially responsible? How to buy stocks that fit your beliefs.
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From satellites to digital models, researchers play a part in battling blazes.
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In Africa's poor rural areas, some children walk 10 mi. to school every morning.
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From vaccines to clean water, health advances have changed the world.
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Jared Genser helped free a friend from Chinese prison.
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Founder of the Body Shop credited with changing the face of cosmetics industry.
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ABC talks to one of the doctors behind cooling therapy used on Kevin Everett.
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When stars rally for causes, regular folks don't necessairly open their wallets.
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They're 25 people who've changed the world -- some for better, some for worse.
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New report visualizes impact of sea level rise -- and it's not pretty.
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Environmentalists, once wary, now optimistic about impact company could have.
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New chief scout takes the BSA into a new century.
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Environmentalists say green initiatives like News Corp's will help the climate.
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The man who coined the term "soccer mom" on how small groups make big changes.
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