Traffic in the air, on sea and on highways has been interrupted, industrial production has been halted, and entire populations are now confined. The Covid-19 pandemic, a health crisis with no precedent in modern history, is forcing humanity to make a pause. 

And, while we are compelled to restrain our activities and to decrease our sound level, positive natural phenomena are occurring everywhere on the planet sometimes at an unexpected speed: the waters of Venice are clearing, the sky is reappearing above Beijing, the Himalayas can once again been seen from hundreds of kilometers away, wildlife can be sighted with an unusual frequency, animals are taking possession of the streets, and greenhouse gas emission rates are dropping.