Poor air quality has been linked to Covid-19 impacts. Trump’s EPA is still limiting pollution restrictions. – CNN

But some scientists and legal experts say the moves reflect a dangerous disregard for science in the middle of a deadly pandemic, and could be used to further weaken protections down the road.

The main type of pollution in question -- PM 2.5 -- are microscopic particles that float in the air we breathe and measure barely a fraction of the diameter of a human hair.

The current PM 2.5 standard requires air particle levels to be limited to 12 micrograms per cubic meter.

Still, the EPA decided to leave the regulations untouched.

"Based on review of the scientific literature and recommendation from our independent science advisors, we are proposing to retain existing PM standards which will ensure the continued protection of both public health and the environment," EPA Administrator Andrew Wheeler said in an April 14 statement justifying the move.

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Poor air quality has been linked to Covid-19 impacts. Trump's EPA is still limiting pollution restrictions. - CNN