Aug 04 2020 Love0 “We must reduce class time to limit exposure to the virus” By Cristian Segura Portal Martin Kriegel, an expert in environmental quality in buildings, proposes half an hour in person in classrooms and 15-minute breaks to ventilate them Read More
Jun 26 2020 Love0 Experts doubt that the coronavirus arrived in Barcelona more than a year ago By Cristian Segura Portal A report claims to have detected the virus in a sample of city wastewater taken in March 2019. Read More