Another dataset I like is from the National Atmospheric Deposition Program, which has maps of the US that show we fixed the acid rain problem by implementing stricter emission controls on power plants.
[nadp.slh.wisc.edu/maps-data/nt...](https://nadp.slh.wisc.edu/maps-data/ntn-gradient-maps/ )
https://inkcap.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:77lswp42lgjyw36ozuo7kt7e&cid=bafkreicrbaqmiaclul6rtvvqicgimvt3n2io5k5ppru4om4r3kjlu5hsku
https://inkcap.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:77lswp42lgjyw36ozuo7kt7e&cid=bafkreiaze3as6dfmv2wpldj6dwx3q3efhxozzos6njxssrnrybpwrkub3a