Germany, Bavaria, Upper Bavaria, Isarwinkel, Jachenau, Ortsteile Fleck and Erbhof, rural landscape at sunrise – SIEF09085 archyw December 17, 2020
Ice storm: a country is experiencing the equivalent of the Quebec crisis of 1998 archyw November 23, 2020
Covid-19: what do we know today about the transmission of the virus by aerosols in confined spaces? archyw September 1, 2020