Peter Thomson

Environment

This is your brain on lead, and lots of other nasty pollutants

The water crisis gripping Flint, Michigan has exposed thousands of the city’s residents to dangerous lead levels. But Flint is hardly unique. Many other American cities have faced lead contamination in water supplies, and an expanding list of common substances, including some pesticides and flame retardants, may also be linked to significant developmental and neurological problems. Get the latest on this largely hidden crisis at a live forum from the Harvard T.H. Chan School of Public Health, PRI’s The World and WGBH.

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Global Politics

Climate deal might have to wait

Hillary Clinton told the Climate Change Summit that the US was prepared to mobilize $100 billion a year for developing countries. Doubts grow over whether the summit will achieve its goals of cuts in emissions. The World's Peter Thomson is in Copenhagen.