PBS NewsHour

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Watch VideoJUDY WOODRUFF: President Obama continued his visit to Africa today, making a personal push for peace and calls for democracy. “The Star-Spangled Banner” greeted the first American president to visit Africa’s second most...
Watch VideoJUDY WOODRUFF: Tomorrow, in Addis Ababa, Mr. Obama will be the first American president to address the African Union. Joining me now to discuss the visit and President Obama’s record on Africa is career diplomat and former...
Watch VideoGWEN IFILL: But, first, the 2016 presidential contenders are on the attack, each jockeying to get the chance to secure a place on the stage for the first Republican debate in Cleveland in 10 days. The polls are getting tighter and their...
Watch VideoGWEN IFILL: Turkey and the U.S. are working on plans to sweep Islamic State fighters from a strip of land across the Turkish border with Syria. This comes as Istanbul steps up its air campaign against the extremist group and its crackdown...
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Marek’s disease virus is fatal for industrialized chickens, especially baby chicks. A new study shows the vaccines for Marek’s disease give the virus an evolutionary boost. Photo by Christopher Kimmel/Getty Images The deadliest strains...