BISMARCK, N.D. -- Greenhouse gas emissions from aircraft engines endanger public health and welfare, according to new findings from the federal Environmental Protection Agency. The "endangerment finding" report documented the magnitude of a problem that environmentalists have been urging the agency to tackle for almost a decade.

Vera Pardee, senior counsel with the Center for Biological Diversity, said under the Clean Air Act, the agency is now required to act.

"EPA must set emission standards to reduce the greenhouse gas emissions that are produced by the thousands of aircraft crossing our skies every day,” Pardee said.

The EPA's study said U.S. aircraft are responsible for almost 30 percent of greenhouse gas emissions from all aircraft globally. If commercial aviation was a country, it would rank seventh in the world for carbon emissions, according to the Center.

Pardee cited a recent Center for Biological Diversity report which found that if nothing is done, aircraft will generate 43 gigatonnes of planet-warming pollution by 2050.

"And that number alone would put us far above what we can handle as far as not exceeding the temperature threshold that allows us to continue to live on this planet as we would like,” Pardee said.

Earlier this year, the International Civil Aviation Organization recommended standards for carbon pollution from aircraft, but Pardee said they fall far short of what could be done.

She said technology, either in development or currently in use, could cut the fuel burned by new aircraft engines by 25 percent by 2024.

"So just eight years from now, we could get a quarter of these emissions reduced,” Pardee said. “So, we hope that EPA will propose standards that are meaningful and reduce the problem that they have just identified."

Another recent report, from the International Council on Clean Transportation, said some of the top 20 transatlantic air carriers could cut emissions in half with existing technology and operational improvements.



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State officials in Maine are preparing the next generation for climate change-related activism and careers.

A new state-run website helps young Mainers find ways to use their own talents and interests to counter any climate anxiety and work to build the state's climate resilience.

Abigail Hayne is Maine's youth climate engagement coordinator.

"Whether it's taking action just in your community or in your life, or exploring different climate jobs that are specific to Maine," said Hayne, "the youths can just kind of poke around and find something that makes sense to them."

Hayne said the website offers practical, localized ways young people can get active with their town or school as well as Maine's Climate Council, which currently includes a dozen youth representatives.

Maine faces simultaneous challenges. The state is warming faster than the global average and coping with an increase in extreme weather events.

It also has one of the oldest populations in the nation.

Hayne said towns statewide are developing plans to strengthen infrastructure, and the state has a responsibility to make sure young people are well-informed about these climate-related jobs.

"Soon enough, we're going to start seeing younger generations really on the front lines of climate change and community resilience," said Hayne, "and we need to make sure that they are fully prepared when they enter those roles."

More than 170 communities are utilizing state grants to identify the roads, buildings and energy infrastructure that is susceptible to climate change and begin needed upgrades.

Construction, engineering and electrical workers will be in high demand.

Hayne said the website can connect young Mainers with these new work opportunities as well as each other.






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School buses are getting cleaner in Washington state after this year's legislative session.

Lawmakers in Olympia passed House Bill 1368, which will fund the purchase of zero emission school buses.

Rep. Tana Senn, D-Mercer Island, said the program is getting off the ground quickly.

"As we work towards that long-term goal of all new school buses being zero emission, we're kick-starting this year with $40 million in grants to school districts in overburdened communities," Senn explained.

Going forward, Senn noted school districts will have to purchase zero-emission vehicles once the total cost of ownership is equal to or lower than the cost of diesel vehicles. The state is leveraging the state's Climate Commitment Act resources to fund the transition of its 10,000 school buses.

Devin Denney, director of transportation for Highline Public Schools in King County, which already has electric school buses in its fleet, said he has driven the electric buses and talked about some of their benefits from a driver's perspective.

"You're not competing against that engine noise, the kids aren't competing against the engine noise," Denney observed. "It's a much quieter bus all the way around. The major advantage, of course, is that there's no tailpipe emissions with an electric bus, so our kids' health is better protected."

Senn emphasized health studies have shown there are negative health effects from diesel vehicles for kids, and it is easy to understand why.

"If you think about kids waiting to get on their bus in front of an elementary school and you have this line of buses idling, letting out diesel fumes right at the height of a little child, it becomes obvious that this is probably not the most healthy thing for our children," Senn added.


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Today, in honor of Earth Day, climate advocates are asking California lawmakers and Gov. Gavin Newsom to rally around a plan to put a $15 billion bond measure on the November ballot.

If passed, the bond measure would fund a range of climate resiliency measures.

Sam Hodder, president and CEO of the Save the Redwoods League, said March was the tenth month in a row to break monthly heat records.

"I think Earth Day is a terrific opportunity for the broader public to recognize how nature is critical for resilience, for our quality of life, for our mental and physical health, and for our communities more broadly," Hodder outlined.

Two similar bills to put a bond measure on the ballot are under consideration in Sacramento, Assembly Bill 1567 and Senate Bill 867, but they have been stalled since last summer. The bond would finance many programs, including some to restore wetlands that guard against sea-level rise, and to remove dead wood in forests to guard against mega-fires, which Hodder noted have killed 20% of the giant sequoias in recent years.

Opponents pointed out the state already faces a budget deficit and cannot afford to take on more debt. But only 5% of California's old-growth coastal redwoods remain, mostly due to aggressive logging many decades ago.

Hodder argued the giant trees can be critical ingredients in the fight against climate change because they trap so much carbon.

"Redwood forests sequester more carbon per acre than any other forest system in the world," Hodder emphasized. "We have the opportunity to transition the redwood forest from something that is vulnerable to climate change to something that is helping to solve and address the climate crisis."

Experts blame climate change for California's wild weather over the past few years, which has been marked by extreme drought, devastating fires and flooding rain.