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SAN DIEGO, Calif. (KGTV) - An open letter to the World Health Organization titled “It is Time to Address Airborne Transmission of COVID-19” is signed by 239 scientists from 32 different countries and highlights the importance of acknowledging and protecting the public against the possibility that coronavirus can be spread through the air. One San Diego scientist who signed is from the UCSD Scripps Institution of Oceanography, Doctor Kim Prather.The idea shared is that COVID-19 can be spread from aerosols, which are particles that float in the air rather than dropping to the ground like a droplet. An infected person breathes out aerosols that are suspended in the air, then another person walks through that air and breathes it in.It’s no secret that heath officials have discussed the importance of good airflow to stop the spread, but this paper says leaders like the WHO are not recognizing the possibility that it is airborne and the “lack of clear recommendations on the control measures against the airborne virus will have significant consequences: people may think that they are fully protected by adhering to the current recommendations, but in fact, additional airborne interventions are needed for further reduction of infection risk.”Researchers say wearing masks and social distancing are important steps to stopping the spread, but want to also emphasize that other steps need to be taken to stop the spread through the air. Some steps for public places include getting better ventilation and decreases crowds. At home, people can open doors and windows and also use air purifiers to help. 1618

SAN FRANCISCO (AP) — A firefighter who died while helping people evacuate a Northern California blaze was killed by a fire tornado that at one point reached a temperature of 2,700 degrees Fahrenheit (1,480 degrees Celsius), officials said.Redding firefighter Jeremy Stoke died after he was enveloped in seconds by a fire tornado with a diameter of 1,000 feet (300 meters) and winds up to 165 mph (265 kph), the California Department of Forestry and Fire Protection said in a report released Wednesday detailing his death and the death of a bulldozer operator.Videos released with the report show the massive blaze burning in a populated area and sending a cloud of thick smoke up into the air with flames swirling up into the sky.RELATED: Firefighter killed battling Mendocino Complex fire  The tornado ripped roofs off houses and flung power line towers, cars and a shipping container into the air near the spot where Stoke was overtaken by the flames, according to the report.Cal Fire officials said that on July 26, the 37-year-old fire inspector was driving his pickup truck down a Redding road, working on evacuating people. One minute later he radioed out a "mayday" call saying he was getting burned and needed help.Stoke "identified himself by his radio call sign, and stated that he needed a water drop and was getting burned over," the report said.When an engine captain tried to contact him shortly after, there was no response, it said."Observations from witnesses and other evidence suggest that either several fire tornadoes occurred at different locations and times, or one fire tornado formed and then periodically weakened and strengthened causing several separate damage areas," the report said.Stoke, whose remains were found the following day, was one of eight people killed since the blaze started on July 23 with a spark from a vehicle driving on a flat tire.RELATED: A flat tire started the deadly Carr Fire and days of devastation in California  The wildfire has destroyed nearly 1,100 homes. It was 71 percent contained as of Thursday.The report also detailed the death of private bulldozer operator Don Smith, 81, of Pollock Pines, who was killed when his bulldozer was caught in the flames while trying to improve a fire line, defending a home during what the officials say were "extraordinary fire weather conditions."Both deaths and the injuries occurred within an hour and 50 minutes in one 3-mile (5-kilometer) stretch.Smith was trying to improve a previously constructed a fire line near the Buckeye Water Treatment Plant outside Redding after 5 p.m. on July 26 when other firefighters noticed "a rapid increase in fire activity."It jumped the fire line and a Cal Fire crew chief said he made several radio attempts to tell Smith to "get out of there." Two firefighters in the area also "recognized the urgency of the situation" and tried to reach Smith on foot but had to turn back because of the encroaching flames.Smith reported that he was cut off by the fire and was pushing on in his 2002 John Deere open cab bulldozer in an attempt to reach a safe area. He also requested water drops and four helicopters began dropping water through the smoke and flames around Smith's last known location.Once the smoke cleared, a pilot saw that Smith's dozer had been engulfed in flames and there was no sign of the protective metallic tent that firefighters deploy as a desperate measure when they are about to be overrun by fire. After two attempts, a fire captain was able to reach the bulldozer two hours later and confirmed that Smith was dead. 3592

SAN DIEGO (KGTV)- Drugs and graffiti were just some of the problems filling parks around San Diego, with most of the activity happening during the night hours. A curfew has now been put in place for several parks.Community members and city leaders threw a party Friday morning to celebrate the change. Residents have been rallying for a curfew at City Heights Square Mini Park, which sits in the middle of an assisted living facility for seniors. Neighbors say before the curfew, they observed everything from gangs and drugs at the park. “We are this beautiful community,” says Delia Contreras. “We have kids, we have a lot of good things, but the drugs are no good.”Since the beginning of the year, 217 crimes have been reported within a 1,500 feet radius of the park. The crimes include assault, theft, and vandalism. “To me, San Diego is a paradise, and we need to clean up the whole town,” says Ronald Tieken. City Heights Square Mini Park will now have a nightly curfew from 9 pm to 5 am. There were other parks around the city with the same problems. Cedar Ridge Mini Park, Montclair Neighborhood Park, North Park Community Park and North Park Mini Park. These parks will now have a curfew of midnight to 6 a.m. “It took a lot of time because we didn’t want to take just one site, so we opened it up for other sites to bring their concerns in, and five parks were identified to go forward with it,” says Raul Contreras, with the city’s Parks and Recreation Department. City Heights Square Mini Park will also offer programs for all ages, like aerobics and arts and crafts. The events are free of charge. 1619

SAN DIEGO (KGTV)- One person is confirmed dead after two boats collided nine miles offshore from Imperial Beach. Fishermen on the “Prowler” were on their way back from Mexican Waters when their boat collided with a mega-yacht, the "Attessa IV" Friday night. One of the survivors on the Prowler spoke exclusively with 10News about his experience. It was supposed to be a fun overnight fishing trip for father-son duo Hung and Ken Ngo. Instead, they came back with an unbelievable survival story. 507

SAN FRANCISCO (AP) — California fire authorities say Pacific Gas & Electric Co. power lines sparked the deadliest and most destructive wildfire in state history.Cal Fire said Wednesday the lines in the Pulga area ignited the Nov. 8 fire that killed 85 people in Paradise.The investigation also identified a second nearby ignition site involving vegetation and electrical distribution lines, also owned and operated by the San Francisco-based utility.The second fire was quickly consumed by the initial fire.Lynsey Paulo, a spokeswoman for PG&E, did not immediately comment.The fire in Butte County destroyed nearly 15,000 homes.The nation's largest utility filed for Chapter 11 bankruptcy in January as it faced tens of billions of dollars in potential liability costs related to wildfires in 2017 and 2018. 823