An updated Cochrane Review suggests face masks don’t reduce the spread of COVID in the community. But there are several reasons why this conclusion is misleading.
If our immunity from COVID vaccines is waning, then wearing a mask to prevent infection is even more valuable. But not many people seem to be thinking that way when they’re out and about.
Many countries are winding back COVID-19 restrictions, but governments should be continuing to promote the importance of voluntary mask use and catching up outdoors.
Quantum computers, making greenhouse gases useful, COVID-19 infection from droplet spread and water security were some of the most popular engineering stories in 2020.
A study led by Professor Raina MacIntyre raises questions about the risks of infection for people singing in groups, especially in poorly ventilated rooms.
