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          NASA is sharing sounds of its little helicopter humming through the thin Martian air.

          Cutting the greenhouse gas methane quickly and dramatically is the world’s best hope to slow and limit the worst of global warming, a U.N. report says.

          It’s not yet known whether COVID-19 vaccines can affect your period, but researchers are starting to study the issue.

          The federal government must aggressively bolster primary care and connect more Americans with a dedicated source of care, experts urge in a new report.

          Teams of experts also warn that a ‘substantial increase’ in hospitalizations and deaths is possible if unvaccinated people do not follow precautions.

          The largest section of the rocket that launched the main module of China’s planned space station is expected to plunge to Earth as early as Saturday.

          An up-close view of how the coronavirus infects cells in the brain and spinal cord helps explain the neurological symptoms of some COVID-19 patients.

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          The U.S. Food and Drug Administration is expected to authorize Pfizer’s COVID-19 vaccine for young adults ages 12 and older by next week, setting up shots for many before the beginning of the next school year.

          Last year the World Health Organization launched a program that aimed to scale up production of COVID-19 vaccines in Latin America, Asia and Africa. Pfizer and Moderna refused to participate.

          ‘Long COVID’ patients may be at risk from a possible second pandemic of opioid addiction, given the high rate of painkillers being prescribed to them.

          The CDC says fully vaccinated Americans don’t need to wear masks outdoors anymore unless they are in a big crowd of strangers.

          The CDC and FDA lifted their pause on Johnson & Johnson vaccinations, clearing the way for states to resume shots despite the tiny risk of rare blood clots.

          Will pockets of COVID-19 denialism and vaccine resistance in rural areas allow a wily virus to resurface and cause new outbreaks?

          What kinds of activities are safe for families to do when the adults are fully vaccinated but the kids aren’t?

          Pregnant women with COVID-19 face a significantly higher risk of death and of complications for themselves or their newborns, a new study finds.

          Covid-19 Vaccines

          With demand for COVID-19 vaccines waning, officials are closing some mass vaccination sites while doubling down on getting the reluctant inoculated.

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