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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 DIEGO (KGTV)-- Protests around the nation have put police officers' less-lethal use-of-force under the microscope. A criminal justice professor explained the protocols taught in the Police Academy, and what is considered appropriate and excessive.La Mesa Police used tear gas against riotous protestors rushing Police Headquarters on May 30, 2020."These are things that are designed to get people's attention, to shock them, to say get back," former El Cajon police officer and now criminal justice professor, Kevin LaChapelle said.If the violent protestors disperse, LaChapelle said these less-lethal weapons are serving their purpose. He said in the Police Academy officers are taught to face threats using the "Force +1" method."If somebody is presenting a particular level of force towards me, I can respond with that force and then one more level to basically control the situation."According to the National Institute of Justice, there are five basic levels of "use-of-force" to diffuse a situation.1. It begins with officer presence, in which there is no use of force.2. Then come verbal commands, such as an officer asking for identification or telling someone to 'Stop!'3. The next level is empty-hand control, where an officer could grab, hold a person.4. Then come the less-lethal methods, including a baton, taser, projectile, sound, or chemical sprays.5. The last resort is lethal force or the use of a firearm.LaChappelle said officers primarily use projectiles to control riots. Pepper bullets are normally deployed onto the ground, and when they skid, they emit an uncomfortable spray. Sound, light, or rubber bullets are aimed at or below a person's torso, which can cause bruises. The same go with beanbags, which can be filled with anything from styrofoam to harder materials."When people say, 'This is too uncomfortable, and I can't handle this. I'm going to stop. I'm going to leave,' that is what you're hoping for," LaChapelle said.But to avoid these violent clashes, LaChapelle believes it is crucial to build relationships and dialogue between departments and the community."Lawlessness isn't the answer, but there has to be reform because what's worked in the past does not work for the future," LaChapelle said.ABC10News asked the La Mesa Police Department for its exact protocols for the use of projectiles during violent riots. They sent us a link to their less-lethal weapons manual. Its philosophy states: 2448

SAN DIEGO - San Diego photographers are taking advantage of the serene and luminous glow of the surf this week.Eerie neon blue waves have been seen against San Diego's shore this week, creating some rare photo opportunities. The phenomenon is created when a red tide, which is algae bloom filled with phytoplankton called "dinoflagellates," rolls off waves onto or near the shoreline.The organisms react with a bioluminescent chemical reaction when jostled as a way to warn predators, to lure prey, or communicate within their species. The blue glow can be created by a simple step in the water or crash of a wave.IN SAN DIEGO...The current red tide is being caused by massive numbers of dinoflagellates including "Ceratium falcatiforme" and "Lingulodinium polyedra," according to the Scripps Institution of Oceanography at UC San Diego.The Scripps Institution of Oceanography at UC San Diego is not affiliated with The E.W. Scripps Co., the parent company of this station. Researchers do not know how long this current red tide will last or "the full spatial range of the bloom." In the past, blooms have lasted anywhere from a week to a month or more.San Diego's last red tide event in September 2013 lasted one week, while the previous one in October 2011 lasted a month, according to researchers. Previous ones have lasted even longer.Monday's event was captured from La Jolla to Encinitas. Scripps recommends viewing the marine event from a dark beach at least two hours after sunset, though visibility is not guaranteed.IS IT HARMFUL?...In some areas, a red tide can be toxic to local marine life. In California, the majority are not caused by species that produce toxins, such as domoic acid, according to researchers. However, it's still best to be cautious around the bloom.The Southern California Coastal Ocean Observing System at Scripps samples the water for potential harmful algal toxins weekly.Red tides are unpredictable events and do not always give off bioluminescence, Scripps said.BUT WHY IS IT RED?...The red coloration is due to the high number of organisms in the water. During the day, organisms will swim to the surface to soak in sunlight. Each cell contains a little sunscreen that gives off the color, according to Scripps.When these organisms gather at the surface for sunlight, they can create an especially intense red.Researchers say a combination of physical, chemical, and biological factors are the driving forces behind allowing red tides to form. 2586

San Diego (KGTV)- For many people who live on a fixed income buying groceries may be a challenge. But now, 95,000 San Diegans receiving Supplemental Security Income, or SSI, will be able to apply for the CalFresh program (food stamps). “Individuals receiving SSI receives no more than 0 a month,” says Amanda Schultz Brocheo, with the San Diego Hunger Coalition. “For the majority, of SSI recipients, this all the money they have.”In San Diego, 1 in 11 older adults don’t have enough food to eat. “In some cases, we’ve heard of SSI recipients that will pull out a calendar and circle the days they are going to choose not to eat.”The San Diego Hunger Coalition says they are happy about the expansion but say the amount per day the is less than a day. “We determined that here in San Diego County the average CalFresh allotment is .07 a day.” This week also marks CalFresh Challenge Week. The organization encourages San Diegans to try living off a day for food. It’s meant to bring awareness to the food insecurities around the county. “We know that the CalFresh program is our strongest tool to for fighting hunger and also recognize that the current allotment is fairly small,” says Brocheo. “It makes it fairly difficult for people to live on that amount. With that said that a day is a more than they would have received otherwise.”To apply for the CalFresh program: - apply online- Call 2-1-1 - attend an upcoming CalFresh program event 1466

San Diego (KGTV)- Thousands of students around the world walked out of their classrooms this morning and are taking a stand to help end climate change. Its a part of the “Youth Strike 4 Climate.” Hundreds of students from High Tech High School joined the international fight. Teens say they want a healthy environment for years to come. “This is everyone’s fight, everyone as a community. It's so important that we do something now,” says student Hailey Baiz. The teems say the movement is to let government leaders know that something needs to be done to curb global warming and cut gas emissions. Students at High Tech High say they’ve already reduced their carbon footprint and they want adults to follow their lead. “It is affecting all of us, and I feel that if we go to city hall, we’ll make our voices be heard,” says Frida Sanchez. As part of the international protest, teens are hoping to grab the attention of leaders at their local city halls. 962

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