Zoë McLaren, University of Maryland, Baltimore County
Making rapid antigen tests for COVID-19 cheaper and more accessible can catch the infectious cases before they spread and help everyone resume normal activities safely.
We’ve learnt two cases linked to Melbourne’s COVID outbreak were in fact ‘false positives’. Here’s what that means, why it can happen, and how common it is.
Sensors in smoke detectors monitor how particles in the air affect a flow of current to the battery.
Garrett Aitken/iStock via Getty Images