an event of such magnitude often has unexpected consequences that are, ex ante, quite hard to predict. I assume most of us have already seen evidence of nature "returning" to cities in the form of otherwise wild animals roaming main streets.

But what about other effects have you stumbled upon?

I have recently discovered that weather forecasts will be more uncertain, as less airplanes are flying, hence there is less data about wind. [1]

Would love to see some more!

[1] https://edition.cnn.com/2020/03/24/weather/aircraft-flights-weather-forecasts-coronavirus-trnd/index.html