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CALIFORNIA — Thousands of San Diego residents are saving big by "buying nothing."It's just past 9 a.m. on a late November in Bay Ho and lots of pieces of bread, rolls and muffins are ready for taking. Becky Sloan is the first to arrive.The food is set up outside the home of Tomira Baca-Craig, who runs a food co-op that divvies out extra bread donated by bakeries and stores. On this morning, she posted the giveaway on her "Buy Nothing" Facebook group.It's not just bread. Sloan showed reporters with KGTV in San Diego photos of baseballs, crafting items, shoes for her children and home decor, just some of the stuff she's received in the last two years. All of the items were offered up by neighbors on the Bay Park/Bay Ho Buy Nothing page."I think I might have saved anywhere from ,500 to ,000," Sloan said.Sloan actually gifts more items than she receives."It's awesome. You can give just about anything away, and you can receive just about anything you ask for," Sloan said. 1013

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

California, get ready for nonstop flights to Hawaii on Southwest Airlines. Southwest Airlines announced on Thursday that four California cities will serve nonstop flights to Daniel K. Inouye International Airport in Honolulu (HNL), Kahului Airport on Maui (OGG), Lihue Airport on Kauai (LIH), and Ellison Onizuka Kona International Airport at Keahole (KOA). Southwest Airlines plans to fly to those Hawaiian cites from Oakland Metropolitan Airport (OAK), San Diego International Airport (SAN), Mineta San Jose International Airport (SJC) and Sacramento International Airport (SMF). The Texas-based airline plans to sell tickets to Hawaii sometime in 2018. The service plans are pending FAA approval.  743

Celebrating the 10th year of San Diego Festival of Science & Engineering Expo at Petco Park in San Diego. Explore! Experiment and enjoy! The San Diego Science Expo is back! A free day of fun for the whole family. Science comes to life at over a hundred hands-on exhibits including robotics, engineering, gross & gooey experiments.  You won’t want to miss it!  Saturday, March 3Science & Engineering Expo Day at Petco Park. It's FREE to the public and open from 10a.m. – 5p.m.  Parking is available for in the Tailgate lot and Padres Parkade, but the trolley is a great way to visit, too.Families can bring their own lunches.  The San Diego Padres permit guests to bring food into PETCO Park for individual consumption (but not for large groups) as long as they are consumed in the picnic areas. There is a kids meal option, which includes a hot dog, a juice box and a cookie. This will be available at the Padres concession stands.  Be sure to stop by the 10News Booth to see what it’s like to be on TV! NEW this year: U.S. Air Force Rapid Strike Simulator -- Ever wonder what it’s like to soar the sky on a down-range Air Force mission? Well look no further! EXPO DAY and Festival Week will feature the U.S. Air Force Recruiting Service’s Rapid Strike Simulator. Rapid Strike is a state-of-the-art flight simulator that showcases the intricacy and capability of modern American airpower. Take around in the sky and experience what it’s like to be an airman.Saturday, March 3 through, Sunday, March 11Festival Activities throughout San Diego County 1615

CALEXICO (CNS) - The federal government today broke ground on the first border wall replacement project awarded under President Donald Trump.Customs and Border Protection is replacing a 2.25-mile section of border fencing constructed in the 1990s using scrap metal with a 30-foot-high bollard-style wall just south of downtown Calexico. The project covers an area west of the Calexico West Port of Entry, according to the agency.This project ``is one of Border Patrol's highest priority projects,'' according to a CBP statement ``Although the existing wall has proven effective at deterring unlawful cross-border activity, smuggling organizations damaged and breached this outdated version of a border wall several hundred times during the last two years, resulting in costly repairs.'' 794