This series covers leading-edge research focusing on the environment, including current research data on coal fly ash as a recycling treasure and environmental application; airborne fungi and bacteria in public indoor environments; integrated management of Natura 2000 forest spaces; biochemical biomarkers in aquatic ecotoxicology; the vulnerability of northern cities in North America to weather-related hazards; impact of decreasing Arctic pack ice on the higher trophic levels and new bioindicator sampling procedures in indoor and outdoor air quality control.