Trucks at the Port of Oakland. The new proposal would rescind a 2022 rule designed to significantly reduce emissions of nitrogen oxides, which cause smog.
The Upper Colorado River on the Grand Canyon last month. About 40 million people and 5.5 million acres of cropland depend on the Colorado for drinking water and irrigation.
A talk on rising energy costs on Capitol Hill hosted by Democrats, from left, Sen. Martin Heinrich of New Mexico, Senate Minority Leader Chuck Schumer and Sen. Sheldon Whitehouse of Rhode Island, in March.
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