The strongest heat dome on the planet will soon tower 3.7 miles above Tennessee, drawing extreme heat and humidity into the central United States from the Gulf of Mexico.

Americans born between 1951 and 1980 are invisibly scarred by lead exposure that embedded the toxic metal into their bones. It reemerges later in life.

Air pollution in dozens of cities rose after U.S. embassies stopped providing readings that had previously spurred local government action, a study found.

Agency chief Lee Zeldin had planned the repeal as part a slew of proposals he called “the largest deregulatory announcement in U.S. history.”