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472 points Brajeshwar | 1 comments | 10 Dec 25 15:25 UTC | HN request time: 1.28s | source

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CGMthrowaway ◴[10 Dec 25 15:44 UTC] No.46219027[source]▶

There was a study published about how much air pollution dropped in NYC during the COVID lockdown. PM2.5 was found to have dropped 36%. However with more robust analysis, this drop was discovered to not be statistically significant. I would caution anyone reading this who is tempted by confirmation bias.

Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC7314691/

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1. dj_gitmo ◴[10 Dec 25 16:10 UTC] No.46219489[source]▶

>>46219027 #

That's a very surprising finding since the drop in traffic was very noticeable. I wonder where the PM2.5 is coming from?

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In New York City, congestion pricing leads to marked drop in pollution