"Decades of federal housing discrimination did not only depress home values, lower job opportunities and spur poverty in communities deemed undesirable because of race. It’s why 45 million Americans are breathing dirtier air today, according to a landmark study released Wednesday."

"Twenty-two states urged a U.S. appeals court to uphold new federal rules to reduce vehicle emissions by 28.3% through 2026, after other states and industry participants challenged the planned changes."

"President Biden on Tuesday nominated Joseph Goffman to lead the Environmental Protection Agency’s air office, elevating a seasoned expert on the nation’s environmental laws and setting up a tough confirmation battle in the narrowly divided Senate."

"The Biden administration on Monday proposed strict new limits on pollution from buses, delivery vans, tractor-trailers and other heavy trucks — the first time in more than 20 years that tailpipe standards have been tightened for the biggest polluters on the road."

"It’s not a question of whether national soot standards will be tightened, but by how much — a decision with sizable implications for Americans’ health and industry regulations."

"Increasing wildfires in a warming world may slow the recovery of the ozone layer, according to new research."

"Three Democratic U.S. representatives introduced a bill last week that would require the Environmental Protection Agency to create a pilot program for air monitoring in communities overburdened with pollution."

"Emissions of the potent greenhouse gas methane coming from the global energy sector are 70% higher than officially reported, the International Energy Agency (IEA) said on Wednesday, with the coal sector identified as the biggest single source."

"Documents show that Ascend Performance Materials, the nation’s largest emitter of nitrous oxide, is still emitting significant amounts of the climate super-pollutant."

"Efforts by the nation’s largest emitter of nitrous oxide to rein in the release of the potent greenhouse gas are behind schedule, allowing the emissions, which are relatively easy to eliminate, to continue to fuel climate change.