The more layers your mask has, the better, our new research confirms.
Aerosols are made up of tiny respiratory droplets suspended in the air.
Jeffrey Coolidge via Getty Images
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.
Stanislaw Pytel/Digital Vision via Getty Images
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.
Peter Dazeley/The Image Bank via Getty Images
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.
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.
Muhammad Fayyaz Rub/Shutterstock.com
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.
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.
The city of Phalodi has set a temperature record for India, hitting 51℃. 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.
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.
Aerosols produced by human activity may weaken the strength of cyclones and tropical cyclones, contrary to what scientists…
The role pollution aerosols play in climate change is incredibly complicated.
Climate scientists have established a convincing case for the link between increasing concentrations of greenhouse gases and observed warming of the Earth since the 19th century. The Fifth Assessment Report…
How much influence do aerosols such as this smog have on climate?
New research published today in Nature gives us a better idea of how much aerosols produced by people are influencing climate…
Touch of salt needed, I think.
Around three billion people in the world, largely in developing countries, rely on fuels like wood and charcoal for cooking and heating in the home. But burning these biomass fuels, not least in confined…
Aerosols in the upper atmosphere can potentially mitigate the greenhouse effect by scattering or absorbing solar radiation…
Air pollution has been found to have affected coral growth in the Caribbean over many decades.
Lester Kwiatkowski, University of Exeter
Tiny particles of air pollution can stunt the growth of coral reefs, according to a [new study in Nature Geoscience](http://dx.doi.org/10.1038/ngeo1780](http://dx.doi.org/10.1038/ngeo1780…