Can a Physically Taxing Job Be Bad for Our Brains?

Regular exercise helps to bulk up our brains and improve thinking skills, numerous studies show. But physically demanding jobs, even if they are being carried out in an office, might have a different and opposite effect, according to a provocative new study of almost 100 older people and their brains and work histories. It finds…

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Fast, Less Accurate Coronavirus Tests May Ease the U.S. Backlog, Experts Say

For months, the call for coronavirus testing has been led by one resounding refrain: To keep outbreaks under control, doctors and researchers need to deploy the most accurate tests available — ones reliable enough to root out as many infections as possible, even in the absence of symptoms. That’s long been the dogma of infectious…

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Postal Service Funding Dispute Complicates Impasse Over U.S. Virus Stimulus

This briefing has ended. Read live coronavirus updates here. Here’s what you need to know: ImageDemocrats and voting-rights groups have charged that cuts to mail funding are part of a deliberate effort by President Trump to interfere with mail-in voting critical to a safe election in November. Credit…Andrew Kelly/Reuters A dispute over Postal Service funding…

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Water, Sand and Plenty of Elbow Room on 8 Wild, Protected Coastlines

The grandmother of American conservation, Mardy Murie, once called the national parks our “best idea.” And this year, with foreign travel all but canceled, some of these celebrated domestic destinations have reached new heights of jam-packed popularity — and that, of course, presents challenges during a pandemic. Despite the breathing room offered by the Great…

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Is Your Child an Orchid, a Tulip or a Dandelion?

The new mother from a rural area near Burlington, Vt., noticed that her toddler’s behavior didn’t seem to fit the descriptions in the child-rearing books she was reading. Her daughter would burst into tears when she heard a loud bird call or a person singing out of tune, or if she wore scratchy clothes. And…

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Unveiled: A channel SARS-CoV-2 may use to proceed with viral replication in the host cell

By visualizing coronavirus replication in an infected host cell, researchers may have answered a long-standing question about how newly synthesized coronavirus components are able to be incorporated into fully infectious viruses. Their work uncovers a coronavirus-specific structure in cells that may be a target for much-needed antiviral strategies against this family of viruses. Coronaviruses replicate…

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Chemotherapy is used to treat less than 25% of people with localized sarcoma

FINDINGS UCLA researchers have found that chemotherapy is not commonly used when treating adults with localized sarcoma, a rare type of cancer of the soft tissues or bone. In a nationwide analysis of nearly 20,000 patients whose cancer had not yet spread to other organs, the scientists learned that only 22% were treated with some…

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Targetd ultrasound for noninvasive diagnosis of brain cancer

Brain tumors are typically diagnosed using MRI imaging, as taking a sample for a tissue biopsy is risky and may not be possible due to tumor location or a patient’s poor health conditions. Researchers at Washington University in St. Louis are developing a method to diagnose brain tumors without any incisions. The method is developed…

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UArizona health sciences researcher studies statins for stroke therapy

TUCSON, Ariz. — Every year in the United States, about 800,000 people experience a stroke. Many are left with neurological complications such as paralysis on one side of the body, speech and language problems, vision issues, behavioral changes, and memory loss. Researchers at the University of Arizona Health Sciences aim to reduce these devastating effects…

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