The European Environment Agency’s (EEA) data confirm large decreases in air pollutant concentrations, largely due to reduced traffic and other activities, especially in major cities under lockdown measures, including Milan, Bergamo, Rome, Barcelona, Madrid and Lisbon. Read more here
According to Wikipedia, severe acute respiratory syndrome (SARS) is a viral respiratory disease of zoonotic origin that surfaced in the early 2000s caused by the first-identified strain of the SARS coronavirus (SARS-CoV or SARS-CoV-1). Published in 2010, scientists believe that forest clearing and the destruction of bird habits resulted in the outbreak of SARS in 2002, which caused 77 deaths. Read more study findings here .