The country's two biggest reservoirs are on the Colorado River. Water levels at Lake Powell have dropped steeply during the two-decade megadrought.
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A cicada perches on a picnic table in front of Nolde Mansion in Cumru Township, PA in May 2021. New research shows that these insects urinate in a surprising way.
Ben Hasty / MediaNews Group/Reading Eagle via Getty Images
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Ben Hasty / MediaNews Group/Reading Eagle via Getty Images
Workers at the U.S. Embassy in Havana leave the building in September 2017. New research out of the National Institutes of Health finds no unusual pattern of damage in the brains of Havana syndrome patients.
Emily Michot/Miami Herald/Tribune News Service via Getty Images
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Emily Michot/Miami Herald/Tribune News Service via Getty Images
Flares burn off methane and other hydrocarbons at an oil and gas facility in Lenorah, Texas in 2021. New research shows drillers emit about three times as much climate-warming methane as official estimates.
David Goldman/AP
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This type of staghorn coral (Acropora pulchra)appeared to benefit from the presence of sea cucumbers (Holothuriaatra), a new study finds.
Terry Moore/Stocktrek Images / Science Source
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Millions of people are affected by long COVID, a disease that encompasses a range of symptoms — everything from brain fog to chronic fatigue — and that manifests differently across patients.
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The Washington Post/The Washington Post via Getty Images
Maria E. Garay-Serratos holds a framed photograph of her mother, who died after suffering decades of domestic violence. Scientists are trying to understand how domestic violence damages the brain.
Julio Serratos/Maria E. Garay-Serratos
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Neuroscientist Nathan Sawtell has spent a lot of time studying the electric elephantnose fish. These fish send and decipher weak electric signals, which Sawtell hopes will eventually help neuroscientists better understand how the brain filters sensory information about the outside world. As Sawtell has studied these electric critters, he's had a lingering question: why do they always seem to organize themselves in a particular orientation. At first, he couldn't figure out why, but a new study released this week in Nature may have an answer: the fish are creating an electrical network larger than any field a single fish can muster alone, and providing collective knowledge about potential dangers in the surrounding water.
The "shocking" tactic electric fish use to collectively sense the world
A digital illustration of a circle of hands extending from the edge of the image, each holding a sheet of paper. The papers overlap in the center and, like a puzzle, come together to reveal a drawing of a handgun.
Oona Tempest/KFF Health News
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This artist's concept shows the Voyager 1 spacecraft entering the space between stars. Interstellar space is dominated by plasma, ionized gas (illustrated here as brownish haze).
NASA/JPL-Caltech
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The Voyager 1 space probe is the farthest human-made object in space. It launched in 1977 with a golden record on board that carried assorted sounds of our home planet: greetings in many different languages, dogs barking, and the sound of two people kissing, to name but a few examples. The idea with this record was that someday, Voyager 1 might be our emissary to alien life – an audible time capsule of Earth's beings. Since its launch, it also managed to complete missions to Jupiter and Saturn. In 2012, it crossed into interstellar space.
The Voyager 1 spacecraft has a big glitch. Now, NASA must figure out how to fix it
A case of bronchitis in 2014 left Sanna Stella, a therapist who lives in the Chicago area, with debilitating fatigue.
Stacey Wescott/Tribune News Service via Getty Images
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Stacey Wescott/Tribune News Service via Getty Images
A 3D model of a short section of the stone wall. The scale at the bottom of the image measures 50 cm.
Photos by Philipp Hoy, University of Rostock; model created using Agisoft Metashape by J. Auer, LAKD M-V
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Photos by Philipp Hoy, University of Rostock; model created using Agisoft Metashape by J. Auer, LAKD M-V
Lately, paleoecologist Audrey Rowe has been a bit preoccupied with a girl named Elma. That's because Elma is ... a woolly mammoth. And 14,000 years ago, when Elma was alive, her habitat in interior Alaska was rapidly changing. The Ice Age was coming to a close and human hunters were starting early settlements. Which leads to an intriguing question: Who, or what, killed her? In the search for answers, Audrey traces Elma's life and journey through — get this — a single tusk. Today, she shares her insights on what the mammoth extinction from thousands of years ago can teach us about megafauna extinctions today with guest host Nate Rott.
One woolly mammoth's journey at the end of the Ice Age
Tai chi has many health benefits. It improves flexibility, reduces stress and can help lower blood pressure.
Ruth Jenkinson/Getty Images/Science Photo Library
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Ninety-seven percent of migratory fish species are facing extinction. Whale sharks, the world's largest living fish, are among the endangered.
Ullstein Bild/Ullstein Bild
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