The particles in the filter was collected in 19 hours over three days at Nørrebros Runddel metro station. Photo: Hugo S. Russel.
Credit
Photo: Hugo S. Russel.
Usage Restrictions
Credit
License
Original content
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.