The world economies went from one state to another very quickly, so it is plausible to argue that everything else remained constant. There has been a very significant reduction in economic activity, very large falls in transport by air, road and railways, and with these have come large falls in air pollution and greenhouse gas emissions, as well as reduced pressure on nature.
Since the main effects in the first five months of the pandemic have primarily fallen in the northern hemisphere, this coincides with the breeding season for birds and many mammals and reptiles, and for plants too. There is therefore an opportunity to observe what happens when such an abrupt change happens on a global and local scale, and major parts of the economy cease production.
Answers & Comments
The world economies went from one state to another very quickly, so it is plausible to argue that everything else remained constant. There has been a very significant reduction in economic activity, very large falls in transport by air, road and railways, and with these have come large falls in air pollution and greenhouse gas emissions, as well as reduced pressure on nature.
Since the main effects in the first five months of the pandemic have primarily fallen in the northern hemisphere, this coincides with the breeding season for birds and many mammals and reptiles, and for plants too. There is therefore an opportunity to observe what happens when such an abrupt change happens on a global and local scale, and major parts of the economy cease production.