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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

TERRE HAUTE (AP) — The U.S. government has put the first Black inmate to death since the Trump administration this year resumed federal executions after a nearly two-decade pause. Christopher Vialva, 40, was pronounced dead shortly before 7 p.m. EDT Thursday. He was convicted and sentenced to death in the slaying of a religious couple visiting Texas from Iowa when Vialva was 19. Vialva was the seventh federal execution since July and the second this week. Five of the first six were white, a move critics argue was a political calculation to avoid uproar. The sixth was Navajo. Vialva's lawyer, Susan Otto, has said race played a role in landing her client on death row in the 1999 killings of Todd and Stacie Bagley, who were white.A U.S. Department of Justice spokesperson issued the following statement on the execution: 835

The biggest test of special counsel Robert Mueller's investigation into Russian interference in the 2016 presidential election begins Tuesday with the trial of Donald Trump's former campaign chairman, Paul Manafort.The trial on Manafort's financial dealings will hang over the White House and show just how deeply federal authorities have looked into the private business of Trump associates.It comes as the President continues to rail against Mueller's investigation, calling it a "witch hunt," and some congressional Republicans are looking to impeach the Justice Department official overseeing the Muller probe, Deputy Attorney General Rod Rosenstein.One year ago to the month, federal agents barged into Manafort's Alexandria, Virginia, apartment under a search warrant. They took dozens of hanging file folders, bank statements, discs, memory cards and computer hard drives, and a watch worth several thousand dollars from the design house Bijan -- much of that evidence will be on display for the jury. 1016

TEL AVIV, Israel (AP) — Two Jewish comedians riffing in a podcast about the idiosyncrasies of their shared heritage have sparked an uproar. It started as a lighthearted conversation between Marc Maron and Seth Rogen but talk soon turned to Israel. In his interview on the popular “WTF with Marc Maron” podcast on July 27, 2020, Rogen said amassing Jews in one country to keep them safe “doesn’t make sense.” Their comments about Israel infuriated many Israel supporters and were interpreted as denying Israel’s right to exist. They highlight the country’s tenuous relationship with young, progressive Jewish critics in the diaspora. Rogen says his comments were made in jest and have been misconstrued. Israel has long enjoyed financial and political support from American Jews but it's faced a groundswell of opposition recently from young progressives disillusioned by Israel’s aggressive West Bank settlement building, its perceived exclusion of liberal streams of Judaism and Prime Minister Benjamin Netanyahu’s cozy relationship with President Donald Trump. 1070

Sumner Redstone, who built a media empire from his family’s drive-in movie chain, has died. He was 97. Redstone built his operations through aggressive acquisitions, but many headlines with his name focused on his severing ties with wives, actors and executives. In multiple interviews, he said he’d never die.His tight-fisted grip on the National Amusements theater chain, which controls both CBS Corp. and Viacom Inc. through voting stock, has been passed down to his daughter Shari Redstone, who battled top executives to re-merge the two entities that split in 2006. 578

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