Clean Water Act Climate Scientist Ozone Paris Agreement 
Columbia Climate Law
MAY 8, 2020
EPA of a 2015 rule barring replacement of ozone-depleting substances with hydrofluorocarbons (HFCs), which are powerful greenhouse gases. Circuit vacated the 2015 rule to the extent that it prohibited continued use of HFCs by companies that previously switched to HFCs from an ozone-depleting substance. In Mexichem , the D.C.
ESA
APRIL 11, 2022
Supreme Court reinstates Trump administration Clean Water Act regulation. Maryland General Assembly passes major climate legislation. Diplomats fail to reach agreement in international biodiversity talks. Scientists sound alarm at US regulator’s new ‘forever chemicals’ definition – The Guardian.
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