The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of the Kyoto treaty.

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• Benjamin Spock:

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• Ginger Zee:

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• Alfred Nobel:

  Home is where I work, and I work everywhere.

• Bennet Omalu:

  Yes, the concept that blunt-force trauma of the head causes brain damage is a generally accepted pr

• Maxwell Maltz:

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• Johannes Kepler:

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• Atul Gawande:

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• Robert Ballard:

  I'm a geophysicist and all my earth science books when I was a student, I had to give the wrong ans