NASA researchers have found that since February, pandemic restrictions have reduced global nitrogen dioxide concentrations by nearly 20%. Source: https://earthsky.org/earth/how-much-covid19-related-pollution-levels-deviated-from-norm-2020…
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How One Singapore Sales Conference Spread Coronavirus Around the World
Last month, 109 people gathered in a Singapore hotel for an international sales conference held by a U.K.-based company that makes products to analyze gas. When the attendees flew home, some unwittingly took the coronavirus with them [Editor’s note: the link may be paywalled]. From a report: The virus had a 10-day head start on health authorities who, after belatedly learning…