Baby Coral Deaths Threaten the Great Barrier Reef’s Recovery

(Bloomberg) — The mass death of young and old corals in Australia’s Great Barrier Reef is threatening the recovery of the largest living structure on Earth. 



underwater view of a coral: An undated handout photo received from the ARC Centre of Excellence Coral Reef Studies on October 14, 2020 shows a damaged part of the Great Barrier Reef - the vast World Heritage-listed reef off Australia's northeastern coast.


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An undated handout photo received from the ARC Centre of Excellence Coral Reef Studies on October 14, 2020 shows a damaged part of the Great Barrier Reef – the vast World Heritage-listed reef off Australia’s northeastern coast.

The bleaching of corals off Australia’s northeastern coast due to ocean warming and acidification is happening across all species and to specimens of all ages, according to a new study that analyzed coral demographics. The study, led by Andy Dietzel at the ARC Centre of Excellence for Coral Reef Studies in Australia, confirmed the Great Barrier Reef lost half its corals between 1995 and 2017.

“We measured changes in colony sizes because population studies are important for understanding demography and the corals’ capacity to

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PFAS ‘forever chemicals’ are widespread and threaten human health

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.)

(THE CONVERSATION) Like many inventions, the discovery of Teflon happened by accident. In 1938, chemists from Dupont (now Chemours) were studying refrigerant gases when, much to their surprise, one concoction solidified. Upon investigation, they found it was not only the slipperiest substance they’d ever seen – it was also noncorrosive and extremely stable and had a high melting point.

In 1954 the revolutionary “nonstick” Teflon pan was introduced. Since then, an entire class of human-made chemicals has evolved: per- and polyfluoroalkyl substances, better known as PFAS. There are upward of 6,000 of these chemicals. Many are used for stain-, grease- and waterproofing. PFAS are found in clothing, plastic, food packaging, electronics, personal care products, firefighting foams, medical devices and numerous other products.

But over time, evidence has slowly built that some commonly used PFAS

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