According to a new report by the President's Cancer Panel, researchers have found 300 contaminants -- industrial chemicals, pesticides and pollutants -- in the umbilical cord blood of babies.
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Oceans have absorbed about a quarter of all CO2 emissions, or about 530 billion tons over the last 250 years. But add enough CO2 and you lower the pH, creating a less hospitable environment for many forms of sea life.
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