Coal miner Dennis Ferrell watches over conveyer belts carrying coal out of a mine in Welch, W.Va. Climate talks in Paris are focused on moving away from coal in hopes of protecting the environment. David Goldman/AP hide caption

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Former President George W. Bush and his successor, President Obama, at the April 25 dedication of Bush's library on the campus of Southern Methodist University in Dallas. Larry W. Smith /EPA /LANDOV hide caption

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Erik S. Lesser /EPA /LANDOV

Gun Control: 'Only Modest Change' In Opinion Since Newtown Shootings

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A gun shop in Glendale, Calif. Gabriel Bouys /AFP/Getty Images hide caption

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Gabriel Bouys /AFP/Getty Images