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Why do wet dogs shake themselves dry? Neuroscience has an answer

Experiments with mice have revealed the neuroscience of why dogs shake their wet fur.Credit: Nat NT/Getty When a dog shakes water off its fur, the action is not just a random flurry of movements — nor a deliberate effort to drench anyone standing nearby. This instinctive reflex is shared by many furry mammals including mice, […]

Science

Fat keeps metabolism in tune and on time using an inflammatory immune protein

RESEARCH BRIEFINGS 06 November 2024 The body’s clock is essential for anticipating daily environmental changes. Surprisingly, clock genes are highly expressed in innate immune cells that produce the inflammatory protein interleukin-17A, particularly in body fat. The clock drives a rhythmic production of this protein, which in turn contributes to the metabolic rhythms of fat.

Science

Reading the signs of dementia

Blood tests could make detecting Alzheimer’s disease easier.Credit: Andrew Brookes/Getty In 2018, the people around Daryl Ditz started to see signs that something wasn’t quite right. “My work colleagues noticed I was kind of slipping with the computer stuff — messing up a little bit, putting files in the wrong place,” he says. “My wife […]

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The speed of smell is faster than expected

Get a whiff of this: people can distinguish between two distinct smells presented to them less than one-tenth of a second apart. That’s much shorter than the two to three seconds that a typical human sniff lasts 1 . Access options Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription […]

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How does the brain react to birth control? A researcher scanned herself 75 times to find out

Researchers are cataloguing the effects of birth control on the brain. Credit: Isabel Pavia/Getty Chicago, Illinois Hold the morning coffee and meditation: for about 75 days over the span of a year, neuroscientist Carina Heller’s morning ritual included climbing into her university’s brain scanner at 7:30 a.m. and lying perfectly still for an hour and […]

Science

electrical impulses to major nerve help stop bleeding

Platelets and red blood cells mingle in a blood clot (artificially coloured).Credit: Anne Weston, EM STP, The Francis Crick Institute/Science Photo Library Chicago, Illinois Forget the gauze and bandages: electrical stimulation near the ear might help to reduce bleeding. Researchers hope the technique could one day be used before surgery, childbirth and other events that […]