by Barbara Stoll and Zoltán Massay-KosubekIn April this year, as countries went into lockdown, many got to see and experience a rare occurrence: clear blue skies. In many European cities, the lockdown allowed city dwellers to see, smell and feel much cleaner air. In Paris, the air was cleaner than any time during the past 40 years, and the inhabitants of Milan reported being able to clearly see the nearby Alps. Overall, official data and independent analyses showed that toxic air levels fell by up to two thirds in major European cities.
Source: transebvnews