For months, scientists have been saying masks reduce transmission of COVID-19. They now think masks can also make the illness less severe. The reason is the barrier created by a mask likely limits the ...

I spent my career working with microfibres, which have a diameter of 2 micrometres or so. Tangled mats of microfibres made of polypropylene are good materials for air filters — such as those in N95 ...

More researchers are studying everyday materials for homemade masks. Here are the latest findings. By Tara Parker-Pope With fabric stores closed for the pandemic, crafty consumers have begun ...

So you want to wear a face mask? Good call. A growing body of evidence supports the idea that wearing face masks in public, even when you feel well, can help curb the spread of the coronavirus — since ...