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great barrier reef

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Coral reefs bleach in the Great Barrier Reef as scientists conduct in-water monitoring during marine heat in Mackay Reef

World Aug 07

The Great Barrier Reef waters were the warmest in 400 years over the past decade, Australian study finds

By Suman Naishadham, Associated Press

Science Jun 01

staghorn coral
Watch 7:52
Marine biologists scramble to stop a deadly epidemic decimating coral reefs

Coral reefs around the world are in growing danger due to rising temperatures connected with climate change. But in Florida and the Caribbean, marine biologists are racing to fight a new deadly threat. Science correspondent Miles O'Brien reports.

By Miles O'Brien, Will Toubman

Science May 11

Australia Barrier Reef
Majority of Great Barrier Reef coral studied in 2022 was bleached, Australian scientists say

Bleaching is caused by global warming, but this is the reef's first bleaching event during a La Niña weather pattern, which is associated with cooler Pacific Ocean temperatures, the Great Barrier Reef Marine Authority said in its annual report released…

By Rod McGuirk, Associated Press

Nation May 11

FILE PHOTO: A shopper looks at grocery items at a Target store in Los Angeles
Watch 4:42
News Wrap: Sharp rise in inflation may have hit a peak, but remains near 40-year highs

In our news wrap Wednesday, the Labor Department's April consumer price report shows a slight drop in inflation increases amid 40-year highs, Hong Kong police arrested a Catholic cardinal for endangering China's national security, the Great Barrier Reef suffered its…

World Aug 30

Watch 4:56
News Wrap: Hong Kong officials move to deny new protests

In our news wrap Friday, authorities in Hong Kong moved to head off new pro-democracy protests, denying permission for a planned major march. But two veteran activists who had been arrested were released, vowing to “continue to fight.” Also, Australian…

Aug 08

Forget coral bleaching. Warming oceans are killing reefs and dissolving their skeletons

By Berly McCoy

Hotter oceans are killing corals, not just bleaching them. Then their reef corpses dissolve.

Continue reading

Apr 03

How global warming is permanently reshaping the Great Barrier Reef

By Vicky Stein

Even if the Great Barrier Reef is someday covered in coral once again, its architecture and structure won’t be the same, according to a new study.

Continue reading

Jul 02

Watch 5:40
‘Chasing Coral’ documents destruction of coral reefs

By Saskia de Melker, Melanie Saltzman

In the new documentary “Chasing Coral,” a team of photographers, divers and scientists analyze more than 650 hours of underwater footage to illustrate the real-time effects warming seas. The film will premiere on Netflix on July 14. NewsHour Weekend’s Saskia…

Continue watching

Jan 12

Coral bleaching is killing reefs. Is the answer a great migration?

By Nsikan Akpan, Matt Ehrichs

Coral bleaching threatens a third of the planet's reef ecosystems, but can these creatures adapt? Take a voyage deep into the Atlantic Ocean, as the Nekton Mission searches for an answer.

Continue reading

May 16

Australia to expand shipping curbs around Great Barrier Reef

By Rebecca Lee

Australia will widen curbs on shipping around the Great Barrier Reef in an effort to protect the endangered coral system, the government said Saturday.

Continue reading

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