• Carbon dioxide is natural. It is not harmful. It is part of Earth's life cycle...

    Michele Bachmann: Carbon dioxide is natural. It is not harmful. It is part of Earth's life cycle...
    "Stumped By Science: Michele Bachmann Calls CO2 'Harmless,' 'Negligible,' 'Necessary,' 'Natural'". Brad Johnson, The Wonk Room (Think Progress), April 24, 2009.