Former New Jersey Gov. Chris Christie, hugging another guest, along with Kellyanne Conway (left) and Notre Dame University President Rev. John Jenkins (right) tested positive for COVID-19.
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Experiments in college classrooms show how tiny respiratory droplets known as aerosols can spread, even with good ventilation. The risk isn’t the same in every seat.
When a person sneezes, tiny droplets, or aerosols, can linger in the air.
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Many people in Victoria are opting to wear face shields instead of face masks. It’s allowed – but are they as effective at preventing the spread of COVID-19?
How smoke moves inside a bar or outside in fresh air can help in visualizing how the coronavirus spreads.
Shironosova/Getty Images Plus
The 6-foot rule for social distancing doesn’t account for all risks, particularly indoors. Here’s what everyone needs to understand as cooler weather moves more activities inside.
Institutions like hospitals and transit systems have been using UV disinfection for years.
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A researcher explains what it will take to make sure children are reasonably safe from catching the coronavirus aboard school buses.
Ordinary food coloring suspended in tiny droplets in the air can generate oxygen free radicals that collide with airborne virus particles.
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More than 200 scientists wrote to the World Health Organization, warning about aerosol transmission of the coronavirus.
Coughing, sneezing, talking and even just breathing can produce airborne particles that can spread SARS-CoV-2.
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SARS-CoV-2 can be spread through the air. But just how much of a factor that is has been hard to determine. Recent evidence suggests it is common, posing problems as public places begin to reopen.
Evidence is growing that when masks are worn by nearly everyone, it can slow coronavirus transmission.
AP Photo/Rick Bowmer
Recommendations around mask usage are confusing. The science isn’t. Evidence shows that masks are extremely effective to slow the coronavirus and may be the best tool available right now to fight it.
From your lungs into the air around you, aerosols carry coronavirus.
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Aerosols are the tiny particles of liquid and material that float around in our environment. When they come from an infected person, they may be a significant source of coronavirus transmission.
The change in CDC guidance comes in response to new research on how the new coronavirus can spread.
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The CDC now recommends that everyone wear a face covering when they go into a public place. But there’s confusion about why and if this protects the wearer, people around them or both.
The guidance on masks appears to be shifting, but social distancing is still the key step people can take.
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The CDC is reconsidering its policy about the widespread public’s use of masks, as is the World Health Organization. Here are the facts about when it’s appropriate to wear a mask – and what kind.
A smoking machine in the author’s lab. Smoking by a machine is not the same as smoking by a person, the author and others have found.
Katie DiFrancesco
Vaping is under heavy scrutiny in the wake of six deaths and hundreds of illnesses. A product engineer who studies how people puff explains why the way users vape could be a clue.
Tiny CubeSats are ready to be our eyes in the skies.
Earth Background: NASA; HARP Spacecraft: SDL; Montage: Martins, UMBC
As technology advances, tiny satellites no bigger than a loaf of bread have advanced from just proving they work to being big contributors in answering science questions.
Scorching temperatures in Jammu, northern India. This month has seen records smashed in nearby Rajasthan.
Jaipal Singh/EPA
The city of Phalodi has set a temperature record for India, hitting 51°C. Until now, India’s smog problem has curbed extreme temperatures. But that could be about to change.
CSIRO’s Birdsville station is one of several in Australia that monitors aerosols in our skies.
CSIRO
A leading NASA scientist has asked CSIRO to stay in its global network that monitors atmospheric dust and pollution. The data are vital to understand the effects on weather and climate.