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Topline Researchers, including scientists from the Centers for Disease Control and Prevention (CDC) and the American Red Cross, have found evidence that Covid-19 was present in the U.S. in December 2019, weeks earlier than previously thought and before even the first cases in Wuhan, China, had been publicly identified.  Scientists believe Covid-19 may have been
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A macaque monkey. AFP via Getty Images Scientists have used Crispr gene-editing to remove an HIV-like virus from monkey DNA, a major step towards a cure for HIV infection in humans. In a study led by neurovirologist Kamel Khalili of Temple University in Philadelphia, researchers constructed a modified adenovirus containing a Crispr-Cas9 gene-editing system. That
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Topline The Serum Institute of India has denied claims made by a former trial volunteer in a lawsuit that the Covid-19 vaccine it is conducting trials of that was developed by AstraZeneca and the University of Oxford caused serious neurological side effects, threatening to countersue and seek damages for the “malicious and misconceived” allegations.  An
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SARS-CoV-2 (gold) emerging from cells (green/purple). CC BY 2.0: NIAID How did Covid-19 become a global pandemic, and how can researchers develop vaccines that would give people immunity to the SARS-CoV-2 coronavirus? Answering both questions requires understanding how the human body responds to infection by SARS-CoV-2 — and science suggests that the secrets to the
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getty A species of New World monkeys seems to have found a tidy solution to the infidelity “problem” that many mammals face. The archeological detritus of ancient human settlements, along with the anthropological records of current ones, show that about 85% of human societies have allowed polygyny. That’s a form of polygamy in which women
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The Orion Nebula blazes brightly in the constellation Orion, as captured by the Hubble Space … [+] Telescope. NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team Each Monday I pick out the northern hemisphere’s celestial highlights (mid-northern latitudes) for the week ahead, but be sure to
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Scientific models getty Early in the Covid-19 pandemic, we heard a lot about models. We haven’t heard quite as much in recent months. This is especially interesting because models may be even more useful at the current stage of the epidemic than they have been at any time up to now. After all, we now
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Whitetip reef sharks, Pacific creolefish, barberfish and Moorish idols populate the reef at the … [+] Revillagigedo Archipelago, Mexico. In March 2016, partnering with Mares Mexicanos, the Pristine Seas team conducted an expedition to explore the waters around the small reserve. Photo by Enric Sala, National Geographic Looking on a map, Pristine Seas is the
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Migraine sufferers who have used both cannabis and prescription treatments say that cannabis works … [+] better at bringing on relief getty Migraine headaches are a fairly common condition, but for those who suffer from them, they can make life extremely difficult. With symptoms like throbbing headaches, nausea and vomiting, sensitivity to sound and light,
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