The U.S. Environmental Protection Agency has just proposed rescinding a critically important finding under the Clean Air Act that, according to The Baltimore Sun, “determined that carbon dioxide and other greenhouse gases endanger public health and welfare” (“Trump Environmental Protection Agency moves to repeal finding that allows climate regulation,” July 29). That greenhouse gases are not unsafe has every bit the scientific validity of the claim that vaccines are not valuable in preventing disease.

I await the repeal by the Trump administration of another dangerous law, the law of gravity. EPA Administrator Lee Zeldin claims repealing the finding on greenhouse gases will be “the largest deregulation in the history of America.” I suggest that impact would be dwarfed by repealing the gravity law. Just imagine, for example, all the so-called safety rules under which the airplane industry operates due to the gravity law from which they will now be freed.

I do worry that pop flies hit in Oriole Park at Camden Yards might never come back down, but baseballs are replaceable.

Just give thanks for another MAGA scientific triumph.

— Steven P. Grossman, Pikesville

Add your voice: Respond to this piece or other Sun content by submitting your own letter.