Quote:
Originally Posted by oil pan 4
The U.S. uses more fuel than ever and the air has been getting cleaner and cleaner over the last 30 years.
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Couldn't be more wrong. 30 years ago the atmospheric CO2 was approximately 345 ppm, now it's about 395 ppm.
As for the other stuff, while some really bad spots (like the LA Basin) have been cleaned up somewhat, there's been a corresponding decrease outside those places. Though I will grant that it's hard to separate what's 'Made in USA' from the stuff that blows in from China and elsewhere.