Air pollution impacts can be heart-stopping

There is an increased risk of out-of-hospital cardiac arrest even from short-term exposure to low concentrations of dangerously small particulate matter PM2.5, an international study has found, noting an association with gaseous pollutants such as those from coal burning, wildfires/bushfires and motor vehicles. The authors call for a tightening of standards worldwide; the findings also point to the need to transition to cleaner energy.