Most school buses on the nation's roadways are still powered by diesel engines but in North Dakota and elsewhere, there is hope about the push to switch to electric fleets.

Through the Bipartisan Infrastructure Law, school systems can seek federal grants and rebates to buy electric buses. This year, the Harvey School District in North Dakota was among the recent funding recipients.

Susan Mudd, senior policy advocate for the Midwest-based Environmental Law and Policy Center, said it is encouraging to see this activity, knowing the benefits that come with it.

"The children or the riders on buses, including the drivers, will experience zero tailpipe emissions," Mudd pointed out. "Which they now do because fumes, unfortunately, often get circulated into buses. "

The electric models also prevent harmful emissions from floating through neighborhoods, especially when buses are idled. Mudd noted it has a positive effect on human health as well as mitigating climate change, as transportation is responsible for nearly 30% of U.S. carbon emissions. Even with federal support, she acknowledged there are still upfront cost barriers in getting electric buses.

Elsewhere in North Dakota, the Mapleton School District recently began running the electric bus it obtained through the federal program.

Jenna Farkas, superintendent in Mapleton, said their small district has a tiny fleet, but thinks the change could still have a big impact.

"Since we do only run one bus, it would only make sense that we could also just run an electric bus and save on fuel, as well as hopefully the maintenance," Farkas explained.

She added they will keep their older diesel model as a backup. As for other challenges, experts studying these efforts say for large fleets, implementing charging infrastructure can create headaches.

Some districts rely on transportation leases, which complicates program requirements to replace old models. There are nearly 500,000 school buses in the U.S., and only a small percentage are electric. Advocates said the program is ushering in several thousand more as applications are processed.

Under the federal Clean Air Act, Kentucky is required to keep haze air pollution under control in Mammoth Cave National Park.

Critics said the state's current plan falls short. Coal-fired power plants are the driving cause of air pollution impairing visibility in the Commonwealth, according to the National Parks Conservation Association.

Ashley Wilmes, executive director of the Kentucky Resources Council, said the state's current Draft Regional Haze State Implementation Plan only considers two facilities as significant pollution emitters, despite evidence there are more.

"There has to be a detailed analysis of additional major polluters in Kentucky that are contributing to this haze," Wilmes asserted. "They did not do this analysis for other major coal plants, including Ghent and Mill Creek, Trimble Station and others."

The Kentucky Energy and Environment Cabinet hears virtual public comments on the plan tomorrow at 10 a.m. ET.

Ulla Reeves, clean air program director for the National Parks Conservation Association, said several major polluters in the region are contributing to poor air quality.

"We see in Kentucky that Mammoth Cave is actually one of the most polluted national parks in the entire country," Reeves pointed out. "It is surrounded by polluting facilities."

Bryon Gary, program attorney for the council, said advocates are asking the state to include additional pollutants and facilities, and address environmental justice impacts to surrounding communities. He added residents' input will be considered by the Environmental Protection Agency.

"The public will have the opportunity to give those comments," Gary noted. "Then at some later point, the Energy Environment Cabinet will develop a written response to comments that will be submitted to EPA, along with their final state implementation plan."

Exposure to the air pollution particles triggering haze can cause breathing problems, lung cancer, heart attacks and low birth weight in newborn babies, according to the Centers for Disease Control and Prevention.

California air-quality regulators today are expected to adopt new fees for big polluters and rules to encourage large buildings to switch equipment from gas to zero-emission electric models.

Fifteen clean-air advocacy groups are rallying in front of the Southern California Air Quality Management Board in Diamond Bar today, urging passage of the new rules.

Kimberly Orbe, senior conservation program manager for the Sierra Club's Angeles chapter, said the transition would cover gas-fired water heaters, boilers and process heaters.

"Fossil fuel appliances are responsible for 10% of the emissions from stationary sources in our region," she said, "so that's really huge."

Opponents of the change include SoCalGas and industry groups representing dry cleaners and restauranteurs.

When burned, natural gas emits harmful smog-forming air pollution and greenhouse gases that fuel climate change. The So Cal Air Quality Management District's new pollution fee program would require large industrial polluters to pay to support regional clean-air efforts. The Sierra Club estimates this could raise about $25 million a year.

According to the American Lung Association, the Los Angeles/Long Beach area has the most high-ozone days of any metropolitan area in the country. Orbe said that's why advocacy groups have been pressing for stronger air-quality standards for years.

"Our region is burdened by an overwhelming amount of pollution - from oil drilling, from refineries, from the ports, from the warehouses, freeways," she said. "So, we want to make sure that we're passing strong rules to ensure that we continue to clean up our air, year after year."

The board is also expected to set a hearing date to consider new rules requiring zero-emissions technologies in the rail yards to combat diesel pollution from trains.

Leaders in Michigan are marking the historic new clean car standards, finalized by the Environmental Protection Agency.

The final rule, Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles, was announced in March.

Michigan leaders are celebrating the move as a positive step in the fight against climate change.

State Rep. Jasper Martus, D-Flushing, said many people think of climate change and creating good jobs as two separate issues, but he said he believes the two go hand-in-hand.

"When we pursue policies that combat climate change, such as investing in electric vehicles, having higher standards for the vehicles that are produced here in Michigan and the United States," said Martus, "we can do it in such a way that creates good paying jobs."

The new standards will phase in over model years 2027 through 2032.

Martus said in addition to creating new jobs, the transition to electric vehicles will also decrease pain at the pump resulting from sky high gas prices.

He added he believes it's time for companies that make EVs to make their pitch to the public.

"We're not to the point now where everything is going to be electric vehicles overnight," said Martus. "We're not even at the point where everything could be a hybrid overnight. But we're beginning that process of these companies making electric vehicles need to make the pitch."

Martus added that as EV makers pitch their product, consumers will eventually see the prices of the vehicles come down - making them just as competitive, if not more so, than traditional vehicles.




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