 
      How a Landmark Environmental Law May Have Quietly Saved a Billion Birds
    
              January 06, 2021 — 
            New research reveals a previously uncounted benefit of the Clean Air Act—at a time when the Trump administration is weakening its protections.
    
          
       
       
       
       
       
       
       
       
       
       
       
       
       
       
       
      