Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
A panel joins Diane to talk about the human health dangers related to mercury exposure and the new EPA rule which limits mercury emissions from power plants.
- John Walke Director of clean air programs for the Natural Resources Defense Council
- Scott Segal Attorney in private practice specializing in environmental and energy policy issues
- Dr. Lynn Goldman Pediatrician, epidemiologist and professor at the Johns Hopkins Bloomberg School of Public Health; former assistant administrator for the Environmental Protection Agency's Office of Prevention, Pesticides and Toxic Substances
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