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PBS NewsHour

Storms, Starfish Wiped out Half of Great Barrier Reef Coral


A new study finds that in the last 27 years, half of Australia's Great Barrier Reef coral has died. Gwen Ifill talks to Nancy Knowlton, a coral reef biologist and chair of Marine Science at the Smithsonian Institution, about ecological and economical consequences of the collapse, as well as measures to help mediate the decline.

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PBS NewsHour

State of the Union 2016

PBS NEWSHOUR offers live coverage of President Obama's speech and the Republican response.


PBS NewsHour

PBS NewsHour Weekend

Premieres Saturday, September 7, 2013 at 6 p.m. ET.


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