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CHICAGO, Ill. – A study published this month suggests that by lessening the amount of virus you take in by putting on a mask, you may also lessen the likelihood of getting severely sick if you contract COVID-19.As the race to a safe and effective coronavirus vaccine heats up, new research about masks is changing the narrative on their importance.Last week, CDC Director Dr. Robert Redfield called face masks the most “powerful public health tool we have.”“I might even go so far as to say that this face mask is more guaranteed to protect me against COVID than when I take a COVID vaccine,” said Dr. Redfield.It was a stark change from CDC messaging early on in the pandemic that face coverings would most likely only protect those around you.“That was because there was a lot of data at that time that you can shed the virus at high rates from your nose and mouth even when you feel well,” said Dr. Monica Gandhi, an infectious disease doctor and professor of medicine at the University of California – San Francisco.She co-authored newly published research in the New England Journal of Medicine that theorizes that not only do masks protect the wearer but they may even reduce the severity of the coronavirus when someone gets infected.“We realized that we should be messaging more strongly masks protect you as the wearer and protects others,” said Dr. Gandhi.It theoretically works much like the early days of vaccines that used small amounts of viruses to illicit an immune response in the body. So, by wearing a mask, you are only exposed to lesser amounts of the virus, if any, potentially building up a sort of immunity.“The more virus you get inside, the sicker you are, the less virus you have, the less sick you are. This is called a dose response and it's true of many infections,” said Dr. Emily Landon, an epidemiologist and infectious disease specialist at University of Chicago Medicine.Gandhi says the theory has already been studied and proven in animals.“There was a hamster study that looked at the COVID-19 virus and the more that the hamsters were given, the more sick they got,” she said.Dr. Gandhi says it could also explain the why according to the CDC, 40% of coronavirus patients are asymptomatic.“Countries that mask well have lower rates of severe illness than countries that don't mask well. So, putting it all together, this is our hypothesis.”And while the research is still theoretical, if it bears out, experts say universal mask-wearing could drive up the proportion of people who get less sick from the virus if they do contract it. 2579

CAPE CANAVERAL, Fla. (AP) — NASA is upping the ante with its newest rover headed to Mars. Set to rocket away this week from Florida, the spacecraft named Perseverance is NASA's brawniest and brainiest Martian rover yet. It sports the latest landing tech, plus the most cameras and microphones ever assembled to capture the sights and sounds of Mars. 358

CHICAGO (AP) -- A federal judge has ruled Attorney General Jeff Sessions cannot follow through with his threat to withhold public safety grant money to Chicago and other so-called sanctuary cities for refusing his order to impose tough immigration policies.U.S. District Judge Harry Leinenweber on Friday granted Chicago's request for a temporary "nationwide" injunction. That means the Justice Department can't deny requests for the grant money until Chicago's lawsuit against the agency is concluded.  He wrote that Chicago has shown a "likelihood of success" in its arguments that Sessions overstepped his authority with the requirements.Chicago refused to comply with the Justice Department's demand that it allow immigration agents access to local jails and notify agents when someone in the United States illegally is about to be released from custody.  877

CARLSBAD, Calif. (CNS) -- Police Friday announced the arrest of a 54-year-old Poway man on suspicion of killing a young woman in Carlsbad 33 years ago.James Charles Kingery was arrested Wednesday in connection with the sexual assault and murder of 26-year-old Julia Hernandez-Santiago, whose body was found on Oct. 10, 1987, on an ivy-covered embankment in the 2100 block of Alga Road, west of Alicante Road, Carlsbad police spokesman Jodee Reyes said.The San Diego County Medical Examiner's Office determined the cause of death was asphyxiation due to strangulation."Investigators were able to recover several pieces of key evidence at the time; however, a suspect was never identified," Reyes said.Over the next three decades, detectives continued to follow leads and technology eventually helped reveal new investigative angles to probe.Last March, San Diego County sheriff's deputies arrested a man on narcotics and weapons violations and took a DNA sample from him, as required by law based on his alleged offenses, Reyes said. Last May, the sheriff's crime lab notified Carlsbad police that the DNA samples from the 1987 murder case were a match for Kingery.Kingery was booked into the San Diego Central jail around 12:30 p.m. Wednesday on suspicion of murder, according to jail records. He was being held without bail pending his arraignment, scheduled for July 31.A motive for the killing has not been disclosed. 1428

CAPE CANAVERAL, Fla. (AP) - NASA launched another of the world's most advanced weather satellites on Thursday, this time to safeguard the western U.S.The GOES-S satellite thundered toward orbit aboard an Atlas V rocket, slicing through a hazy late afternoon sky. Dozens of meteorologists gathered for the launch, including TV crews from the Weather Channel and WeatherNation.GOES-S is the second satellite in an approximately billion effort that's already revolutionizing forecasting with astonishingly fast, crisp images of hurricanes, wildfires, floods, mudslides and other natural calamities.RELATED: NASA's James Webb Space Telescope Launch Might Be Delayed - AgainThe first spacecraft in the series, GOES-16, has been monitoring the Atlantic and East Coast for the past year for the National Oceanic and Atmospheric Administration . The same first-class service is now coming to the Pacific region.Besides the West Coast, Alaska and Hawaii, GOES-S also will keep watch over Mexico and Central America. It will become GOES-17 once it reaches its intended 22,000-mile-high orbit over the equator in a few weeks, and should be officially operational by year's end."We can't wait!" tweeted the National Weather Service in Anchorage just before the rocket soared from Cape Canaveral Air Force Station.RELATED: SpaceX Falcon 9 rocket finally launches after two liftoff delaysThe weather service's Jim Yoe said on NASA TV that he was "really excited" to see his first launch in person."I'm even more excited about the work that's coming up for me and my colleagues, putting these new data to work for better forecasts and warnings for the American public," said Yoe, an official at the Joint Center for Satellite Data Assimilation.With these two new satellites, NOAA's high-definition coverage will stretch from the Atlantic near West Africa, a hotbed for hurricane formation, all the way across the U.S. and the Pacific out to New Zealand.RELATED: Satellite lost by NASA discovered 12 years laterIt's the third weather tracker launched by NASA in just over a year: "three brilliant eyes in the sky," as NOAA satellite director Stephen Volz puts it. GOES-16 launched in late 2016 and an environmental satellite rocketed into a polar orbit from California last November.These next-generation Geostationary Operational Environmental Satellites, or GOES, are "a quantum leap above" the federal agency's previous weather sentinels, Volz said. This is the 18th launch of a GOES since 1975; one was lost in an explosion during liftoff and all but three of the satellites already up there are retired. Rockets by United Launch Alliance, a venture between Lockheed Martin and Boeing, carried all those GOES.Even as it was still being checked in orbit, GOES-16 provided invaluable data to firefighters battling blazes in Texas, Oklahoma and elsewhere last March and to Houston-area rescue teams in the flooded aftermath of Hurricane Harvey last August, according to officials. GOES-16 also observed the uncertain path of Hurricanes Irma and the rapidly intensifying Hurricane Maria in September.RELATED: SpaceX Plans To Bring High-Speed Internet To BillionsGOES-16 "turned out to be better than we expected it to be," said National Weather Service director Louis Uccellini, on hand for Thursday's launch. The satellite wasn't officially on duty yet, "and we were just standing there gawking at the imagery,"As Hurricane Harvey approached the Texas coast, the satellite revealed the clouds sinking in the eye and the eye expanding as the storm morphed from a category 2 to 4, Uccellini said. Those images helped determine when it was safe for rescue teams to go out and save stranded residents, he added.The satellite also alerted authorities in Texas and Oklahoma to the eruption of new blazes even before the 911 calls came in, Uccellini said. He said the satellite also tracked the direction of the fires like never before, prompting first responders to later tell NOAA: "You saved lives."RELATED: Report: NASA Is Planning To Privatize International Space StationTwo more are planned in this four-satellite series: GOES-T in 2020 and GOES-U in 2024. The .8 billion cost includes the development, launch and operation of all four satellites as well as ground systems through 2036. 4290

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