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The Carolina parakeet went extinct in 1918. James St. John / CC BY 2.0

The Carolina parakeet, the only parrot species native to the U.S., went extinct in 1918 when the last bird died at the Cincinnati Zoo. Now, a little more than 100 years later, researchers have determined that humans were entirely to blame.

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By Bijal Trivedi

The Centers for Disease Control and Prevention (CDC) released a report on Nov. 13 that describes a list of microorganisms that have become resistant to antibiotics and pose a serious threat to public health. Each year these so-called superbugs cause more than 2.8 million infections in the U.S. and kill more than 35,000 people.

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EcoWatch Daily Newsletter

Scientists have developed an innovative way to protect endangered rhinos from poaching: flood the market for rhino horn with a cheap, fake alternative.

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Environmental scientists say they need help coping with grief about the decay of nature. Pexels

By Marlene Cimons

Scientist Tim Gordon studies how rising temperatures are damaging corals in Australia's Great Barrier Reef, where intense cyclones and warm waters have caused extensive damage in recent years. What he sees brings him to tears.

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By Marlene Cimons

Scientist Aaswath Raman long has been keen on discovering new sources of clean energy by creating novel materials that can make use of heat and light.

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The very first picture of a black hole. picture-alliance / dpa / Event Horizon Telescope

By Judith Hartl

Here it is! The very first picture of a black hole. At six press conferences simultaneously — in Brussels, Washington, Taipei, Tokyo, Shanghai, Santiago de Chile — researchers presented the remarkable photo: A dark circle with a flaming orange ring of light.

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By Jessica Corbett

As people across the globe mobilize to demand bold action to combat the climate crisis and scientific findings about looming "environmental breakdown" pile up, a startling new study published Monday in the journal Nature Geoscience warns that human-caused global warming could cause stratocumulus clouds to totally disappear in as little as a century, triggering up to 8°C (14°F) of additional warming.

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James Cawley / Getty Images

By Marlene Cimons

When Swedish chemist and inventor of dynamite Alfred Nobel died in 1896, he left his considerable fortune to fund annual prizes given to individuals who had conferred "the greatest benefits" to humanity during the previous year. But his vision only included five fields deemed worthy of recognition at the time: chemistry, physics, physiology or medicine, literature and peace. Later, Sweden's central bank also created a sixth prize in economics in his memory.

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Dr. Warren M. Washington (left) and Dr. Michael E. Mann (right). Joshua Yospyn / AAAS

By Marlene Cimons

Warren Washington can trace at least one of the origins of his extraordinary scientific career—more than half a century of groundbreaking advances in computer climate modeling—to a youthful curiosity about the color of egg yolks.

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Ice melt from Greenland, where this iceberg was photographed, could wreak havoc on the global climate this century. posteriori / Getty Images

There's good news and there's bad news. Two new studies focusing on ice melt in Antarctica and Greenland have revised down the worst-case scenario for the amount of sea level rise the world could see by 2100, but say the overall climate impacts of melt water entering the oceans could be devastating.

"The sea-level estimates maybe aren't as bad as we thought, but the climate predictions are worse," lead author of one of the studies and Antarctic Research Center of the University of Victoria, Wellington climate scientist Nick Golledge told National Geographic.

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Power plants like this one need to be retired at the end of their natural life to limit warming to 1.5 degrees. Peter Cade / The Image Bank / Getty Images

It is still possible to limit global warming to 1.5 degrees Celsius above pre-industrial levels, a study published Tuesday in Nature Communications found, as long as we act immediately to phase out fossil fuels.

The study used a climate model to determine what would happen if, beginning at the end of 2018, all existing fossil fuel infrastructure—from industrial equipment to cars to planes to ships to power plants—was replaced with renewable alternatives at the end of its design lifetime. The researchers found there would be a 64 percent chance of limiting warming to 1.5 degrees, in line with the most ambitious goal of the Paris agreement.

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