The Environmental protection agency (EPA) is set to announce their new airplane emissions standards that will bring the US in line with international norms set by the UN International Civil Aviation Organization (ICAO).

The regulation will be revealed on July 22, 2020, Reuters claims citing EPA Administrator Andrew Wheeler. Standards will apply to in-production aircraft starting from 2028, while planes currently in use will remain unaffected.

ICAO’s global airplane emission standards regulate the amount of carbon dioxide (CO2) a plane engine can emit, limiting the impact of aviation greenhouse gas emissions on global climate. They were proposed in 2016 and aimed at all aircraft makers; both Airbus and Boeing, two largest manufacturers, have backed the decision. 

So far the EPA has adopted ICAO’s standards on emissions of oxides of nitrogen (NOX) and carbon monoxide (CO), regulations that were implemented in 1997 and 2005 and updated in 2012.

 
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As pressure from the public domain and lawmakers' mount to reduce its emissions, aviation has been on a quest to do so. Yet its emissions are only on the rise. Why?