Gregory's ServerFascinating to see how fast Paris cleaned up its smog pollution.
Equally fascinating: how this same graphic has been making the round from French via German to now English meme status
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Open on fediscience.org Gernot WagnerWebsite:
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gwagner@columbia.edu
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Climate economist, Columbia Business School. https://gwagner.com
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@gwagner Paris is fantastic - so much better in the centre than I remember. Here's a snap from a few days ago...
@gwagner What did they do?
@gwagner Amazing what limiting car traffic can do.
(I know that's not the only thing Paris did, but it is a large contributor).