Time to upgrade from cloth and surgical masks to respirators? Your questions answered

By Leyla Asadi, PhD candidate and infectious diseases doctor, University of Alberta
C Raina MacIntyre, Professor of Global Biosecurity, NHMRC Principal Research Fellow, Head, Biosecurity Program, Kirby Institute, UNSW
Lisa M Brosseau, Research Consultant, Center for Infectious Disease Research and Policy, University of Minnesota
Trish Greenhalgh, Professor of Primary Care Health Sciences, University of Oxford

The airborne nature of COVID supports routine use of respirators by the public. Here, experts explain the science behind this recommendation.

Read complete article

~	In Brazil, the intelligence services spied on over 300,000 citizens during the military dictatorship

~	Dark matter: our new experiment aims to turn the ghostly substance into actual light

~	The politics stopping the UK from opening a youth mobility scheme with Europe

~	Tarantino abandons his tenth film – five other times Hollywood giants cancelled big projects

~	Jordan has long been a beacon of stability in the Middle East – but that looks to be changing

~	Male baldness is often trivialised – our research shows it should be taken seriously

~	To tackle climate change Labour must rebuild the planning system – not ‘bulldoze’ it

~	US drugs regulator gives LSD ‘breakthrough’ status for treating anxiety – why this is so significant

~	I contributed to the Misogyny In Music report – it’s sadly unsurprising that its recommendations have been rejected

~	Spotify just made a record profit. What can the platform do now to maintain momentum?