MSc student in Analytical Chemistry, Ekaterini Kontou, 25, analyses sewage samples at the National and...
MSc student in Analytical Chemistry, Ekaterini Kontou, 25, analyses sewage samples at the chemistry lab of the National and Kapodistrian University of Athens, during the coronavirus disease (COVID-19) pandemic, in Athens, Greece November 26, 2020. Picture taken November 26, 2020. REUTERS/Stelios Misinas