They might share the same name, but ash produced in the western wildfires is a very different hazard than ash produced in explosive eruptions. ...read more
Multiple vaccines might be necessary to account for variations in effectiveness and how well they protect different populations of people. ...read more
We want a COVID-19 vaccine ASAP — that's a big ask. Here's how long vaccines normally take, and which diseases still don't have vaccines at all. ...read more
Experts say communities must massively scale up COVID-19 testing, with quicker turnaround times. New test innovations in the works promise to do just that. ...read more