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TAMPA, Fla. — Air conditioning units may be contributing to the spread of COVID-19, especially in the southern part of the United States, according to a Harvard epidemiologist.Dr. Edward Nardell is a professor in the Departments of Environmental Health and Immunology and Infectious Diseases at the Harvard T.H. Chan School of Public Health. He's done in-depth research on how air conditioning units contribute to the spread of airborne infections.Nardell said air conditioning can help airborne viruses spread in three ways.First, people go inside to cool down, when you are much safer outdoors, Nardell said. Now, we're seeing more people indoors because of the high heat and humidity, specifically in the southern states like Florida.The second problem is that air conditioning brings in very little outside air, according to Nardell. While this isn't a major problem inside your own home, it can be especially problematic in corporate settings."It just isn't economically possible to bring in outside air, recirculate it and dehumidify it," he said.Lastly, he said when people are indoors, you're often not spaced out safely as you would be outdoors."You are not socially distanced as much, but you're re-breathing the same air that someone else just exhaled," Nardell said. "We call it rebreathed air fraction, and if someone is infectious, often asymptomatic, you're going to be rebreathing their small particles."Nardell also said air conditioning units can generate air currents that can carry large particles even further, similar to what researchers found contributed to the spread of the novel coronavirus disease in an air-conditioned restaurant in Guangzhou, China, involving three family clusters.On the Department of Homeland Security's website, this tool can be used to estimate how long the virus would be expected to remain stable while airborne.Now, the Centers for Disease Control and Prevention is recommending restaurants increasing the distance between tables and improving ventilation.The use of germicidal lamps, a technology that Nardell said is almost 100 years old, has been proven effective in protecting against tuberculosis infection and is already in use in some settings to fight COVID-19.The lamps are set up to shine horizontally, high in the room where sterilization is needed. Air currents, stirred in part by warmth from human bodies, circulate up to the ceiling, where the ultraviolet light kills floating pathogens, and then back down again.This technology, Nardell said, is not only proven, but it can also be deployed cheaply and easily in a number of settings as society reopens.This story was originally published by Lauren Rozyla at WFTS. 2691

The "City by the Bay" is known for more than a few things. Treacherous hills, cable cars, golden bridges and…Sourdough bread, which is San Francisco’s not so well-kept secret for at least the last 150 years, if not longer. Just ask Jen Latham.“The Basque country, which is that region kind of in between France and Spain, has an amazing tradition of this exact style of bread, like that very crusty, very wet, very open crumb bread. And during the gold rush and just after the gold rush, there was this huge influx of Basque people to the to this area. They brought that tradition of bread here,” said Latham.Latham is the head of Bread at Tartine Bakery in San Francisco.Ever since San Francisco boomed in the mid 1800’s with the gold rush, the city has been a haven for the sour bakers. The tradition is alive and well at Tartine.What makes sourdough different than other bread? It’s this little thing called a starter.“It’s a paste of flour and water that’s inoculated with the right balance of yeast and bacteria to raise dough,” said Latham.Yup just mix a little flour and water and let it collect the natural bacteria in the air and you too can have your very own sourdough starter. And since the onset of the COVID-19 pandemic people have.People at home have been making, feeding, and nurturing their own starter at home.“Hopped on the bandwagon during COVID, just like millions of people probably did. Kind of found some blogs and started from there but it’s been going since like April,” said TC Jamison, a home baker.Jamison started his starter six month ago when the lockdowns were in full swing. He’s been baking and feeding it ever since.“You’re dealing with something that’s alive, so it’s going to be different every time,” said Jamison.Yup, feeding it fresh flour and water every day, for six months. It’s a lot of work.“The starter has been going, the one that we use now for well over 20 years,” Latham explained.So Jamison has a little ways to go. Some bakeries in San Francisco have had an ongoing starter for more than 150 years.But Jamison has a pretty special goal for his starter."My daughter was born in June. I was pretty hell bent on keeping the starter going before she was born and then afterwards. So now I can always say, that’s been around since before you were born,” he said. That will go down in the dad joke hall of fame.At Tartine, they’ll continue to shape, fold, and flour their way into the fabric of San Francisco sourdough history.“You’re never done learning about bread. There’s always more to learn. There’s always things you can change, there’s infinite variables. The flour and the weather and you’re fermentation management, timing, temperature. You’re never done,” said Latham 2732

The biggest shopping day on the planet raked in an eye-popping .4 billion.Chinese e-commerce giant Alibaba said Saturday that sales soared past billion after just 13 hours of the retail blitz known as Singles Day, eclipsing the .8 billion it managed in the full 24 hours last year.Singles Day, a bonanza of online spending in China, has for years racked up more sales than Black Friday and Cyber Monday combined.Earlier in the day, Alibaba said eager shoppers had managed to spend billion in just 2 minutes.As the clock struck midnight in Shanghai, the final sales tally rang in at ,386,927,848, marking about a 40% increase over last year's record-setting sales total.Singles Day started out as an informal holiday in China celebrating single people on a day that epitomizes not being paired off: 11/11. Alibaba turned it into a festival of discount deals in 2009.Alibaba has used the now-massive event to lure international companies onto its platforms. More than 40% of the brands taking part this year came from outside China, according to research firm eMarketer Retail.And while Singles Day still mostly targets Chinese consumers, it's also increasingly spreading to other countries, experts say.Local players in Southeast Asia like Lazada (an Alibaba subsidiary), Zalora and Shopee launched their own Singles Day promotions this year, said Xiaofeng Wang, an analyst with research firm Forrester.The event is also evolving beyond its original conception as an online shopping spree.Alibaba and its main Chinese rival, JD.com, have both made significant investments in brick-and-mortar businesses. And they're using the popularity of Singles Day to drive shoppers to offline stores, too.Cosmetics giant L'Oreal, for example, set up an interactive mirror at its Shanghai store where shoppers could try on virtual makeup using augmented reality and then order products on a touch screen linked to an Alibaba platform.But beyond the blockbuster sales, Singles Day also creates an enormous amount of waste.Greenpeace said the manufacturing, packaging and shipping linked to the event produced 258,000 tons of carbon dioxide emissions last year. It would take about 2.6 billion trees to absorb it all.The environmental activist group estimates this year's shopping blitz is on track to leave an even bigger carbon footprint."More over-consumption means more CO2 emissions and waste," said Greenpeace campaigner Nie Li. 2442

Surveillance video captured a woman red-handed, with her hand in a donation box at a 7 - Eleven in Melvindale, Michigan.However, she wasn’t putting in her two cents.  The images have some people outraged and giving the lady a piece of their minds. The video shows the woman standing at the counter. It appears when the coast was clear, she made her move.According to the video, she grabbed the donation box meant for the Dearborn Animal Shelter and people with Friends For Animals of Metro Detroit.The staff and volunteers help cats and dogs every step of the way. The donations are used for medical care, food, shelter and anything the animals need in order to help them get adopted.Now it’s gone. “There’s about 40 dollars in there coins and bills”, said 7-Eleven employee Michelle Roberson.“Robbing alone is disturbing, but from a charity that only helps people!,"  said David Wayman, who also works at the store. The shelter and the non-profit both need the support, said  Katie Johnson, Director of Operations with Friends of Animals of Metro Detroit.“We are a non-profit, we take in 2,500 animals a year and we rely on the generosity and support of wonderful donors," Johnson said. "We just put an appeal out there to say, whoever took it, please return it because it will really help us save a little furry life." If you would like to help them recoup some of the money that was lost when the donation box was stolen, you can make a donation at www.metrodetroitanimals.org. 1603

Target announced Monday that it will not open stores on Thanksgiving this fall due to the coronavirus pandemic.The chain follows in the footsteps of Walmart, who made a similar announcement last week.Target added in its press release that it plans to extend holiday sale prices by several weeks. The company said Monday that holiday sales will begin in October, both online and in-store."This season, you can count on getting extra-big savings without the extra-long lines, with plenty of opportunities to score the best deals on the hottest items both before and after November 26," the company said in a press release.The retail giant also said Monday that it was adding an additional 20,000 items to its pickup and delivery services, including groceries and fresh produce. 783