Origins of the beloved guinea pig

Guinea pigs (stock image).Credit: © Weiming / stock.adobe.com New University of Otago research sheds light on guinea pig domestication and how and why the small, furry animals became distributed around the world.advertisement Just published in the international science journal, Scientific Reports, the researchers use ancient DNA from archaeological guinea pig remains which reveals the transition from […]

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Unexpected uncertainty can breed paranoia

Silhouette of person, photo concept (stock image).Credit: © lassedesignen / stock.adobe.com In times of unexpected uncertainty, such as the sudden appearance of a global pandemic, people may be more prone to paranoia, Yale University researchers suggest in a new study published in the journal eLife.advertisement “When our world changes unexpectedly, we want to blame that volatility […]

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‘Fat burning’ molecule has implications for treatment of obesity

Mouse and cheese (stock image).Credit: © leli / stock.adobe.com Obesity affects more than 40 percent of adults in the United States and 13 percent of the global population. With obesity comes a variety of other interconnected diseases including cardiovascular disease, diabetes, and fatty liver disease, which makes the disease one of the most difficult — […]

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Spectacular bird’s-eye view? Hummingbirds see diverse colors humans can only imagine

Hummingbird feeding on flowers (stock image).Credit: © Martha Marks / stock.adobe.com To find food, dazzle mates, escape predators and navigate diverse terrain, birds rely on their excellent color vision.advertisement “Humans are color-blind compared to birds and many other animals,” said Mary Caswell Stoddard, an assistant professor in the Princeton University Department of Ecology and Evolutionary […]

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Insects: Largest study to date finds declines on land, but recoveries in freshwater

Butterfly against urban background (stock image).Credit: © Bianilys / stock.adobe.com A worldwide compilation of long-term insect abundance studies shows that the number of land-dwelling insects is in decline. On average, there is a global decrease of 0.92% per year, which translates to approximately 24% over 30 years. At the same time, the number of insects […]

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Synthetic red blood cells mimic natural ones, and have new abilities

Illustration of red blood cells (stock image).Credit: © phonlamaiphoto / stock.adobe.com Scientists have tried to develop synthetic red blood cells that mimic the favorable properties of natural ones, such as flexibility, oxygen transport and long circulation times. But so far, most artificial red blood cells have had one or a few, but not all, key […]

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First optical measurements of Milky Way’s Fermi Bubbles probe their origin

View of Milky Way (stock image).Credit: © Matthew / stock.adobe.com Using the Wisconsin H-Alpha Mapper telescope, astronomers have for the first time measured the Fermi Bubbles in the visible light spectrum. The Fermi Bubbles are two enormous outflows of high-energy gas that emanate from the Milky Way and the finding refines our understanding of the […]

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Researchers document the first use of maize in Mesoamerica

Corn varieties (stock image).Credit: © Akarawut / stock.adobe.com An international team of researchers investigated the earliest humans in Central America and how they adapted over time to new and changing environments, and how those changes have affected human life histories and societies.advertisement Almost any grocery store is filled with products made from corn, also known […]

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‘Poisoned arrow’ defeats antibiotic-resistant bacteria

Staphylococcus aureus illustration (stock image).Credit: © nobeastsofierce / stock.adobe.com Poison is lethal all on its own — as are arrows — but their combination is greater than the sum of their parts. A weapon that simultaneously attacks from within and without can take down even the strongest opponents, from E. coli to MRSA (methicillin resistant Staphylococcus aureus).advertisement […]

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Discovery of ancient super-eruptions indicates the Yellowstone hotspot may be waning

Grand Prismatic Spring in Yellowstone National Park (stock image).Credit: © gottsfam / stock.adobe.com Throughout Earth’s long history, volcanic super-eruptions have been some of the most extreme events ever to affect our planet’s rugged surface. Surprisingly, even though these explosions eject enormous volumes of material — at least 1,000 times more than the 1980 eruption of […]

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