The federal Pipeline and Hazardous Materials Safety Administration regulates carbon dioxide pipelines, and is holding a two-day conference in Des Moines to take public input and discuss issues surrounding the pipelines.

Opponents believe they threaten air and water quality as well as the people who live near them. Ethanol producers say removing carbon dioxide via pipelines and burying it deep in the ground through a process known as carbon capture and sequestration is an effective way to address safety and environmental concerns.

Ava Auen-Ryan, director of farming and environment for the group Iowa Citizens for Community Improvement, said environmentalists want a federal moratorium on the pipelines until they can be studied more thoroughly, and will make it clear to federal regulators at the conference.

"I think we hope to build pressure on the Pipeline and Hazardous Materials Safety Administration to do their job well," Auen-Ryan explained. "Also to build pressure on state and federal entities to enact a moratorium on CO2 pipelines."

The agenda showed the committee will discuss public awareness, emergency response and effective communication with emergency first responders and with the public during the conference, which takes place today and tomorrow.

Beyond the potential long-term environmental impacts and health implications, Auen-Ryan also cautioned about the immediate human threats posed in the event a pipeline should rupture, and pointed to a break in Mississippi three years ago, sickening 45 people.

Ryan emphasized the very nature of carbon dioxide, which displaces oxygen in the environment, makes it extremely dangerous in an emergency.

"Gas-combustion vehicles; they can't work," Auen-Ryan pointed out. "They need oxygen to work, so that means that emergency response folks cannot get into those communities and people cannot leave the communities via car. And we also know that rural communities in Iowa are not equipped to respond to something like that. "

The agency will also discuss safety expectations for pipeline operators as well as the general state of pipeline infrastructure. There are currently three companies planning to build carbon dioxide pipelines in Iowa.

The U.S. military and a nonprofit environmental group are seeing success in a partnership that strengthens military readiness and conserves Indiana's natural resources.

Some military installations have compatible land uses around them, such as farms and forests, wetlands and grasslands. Sentinel Landscape, a federal initiative managed in part by the Department of Defense, works with nonprofits to manage those lands.

Emy Brawley, Midwest Region vice president at the Conservation Fund, said southern Indiana received a Sentinel Landscape designation in 2022, allowing her organization to work with bases across the region.

"That designation is supporting four Department of Defense installations, including the Lake Glendora test facility," she said. "All four of those installations provide a wide number of testing and training opportunities for multiple branches of our military."

Brawley said it's important to protect lands around military sites from encroachments that impact the military's ability to maintain mission readiness. She added that commercial developments near military bases can cause noise or light pollution that restricts training and testing drills.

Brawley's organization works in the new Busseron Creek Fish and Wildlife Area, the largest conservation project in Indiana in 20 years. The site serves as a buffer of undeveloped land near the Lake Glendora Test Facility, a military base.

Brawley said the area's natural resources are critical for certain species of wildlife in Indiana.

"This new Fish and Wildlife Area protects a five-mile segment of Busseron Creek, along with forests and wetlands and grasslands and streams and lakes," she said. "In fact, a nearby Fish and Wildlife Area documented over 250 different bird species using it."

Brawley said protecting the land in the new fish and wildlife area will make it more functional as a training and testing site. It also allows for public access and recreational activities such as fishing, hunting and camping.

West Virginia communities will see increased air pollution with little oversight under a new Trump administration proposal offering presidential exemptions from the Clean Air Act's requirements for hazardous air pollutants.

Sarah Vogel, senior vice president of healthy communities for the Environmental Defense Fund, said the move could affect more than 200 facilities, including 10 in the Mountain State, emitting toxic chemicals such as ethylene oxide and benzene.

"These are well-defined, highly hazardous chemicals, many cancer-causing compounds coming from a number of different industries, including the chemical and petrochemical industry," Vogel outlined.

A new analysis from the Environmental Defense Fund found more than 500 facilities across the U.S. eligible for pollution exemptions. Most are petrochemical manufacturing plants and coal-fired power plants. The Environmental Protection Agency has not made the requests for exemptions publicly available.

Vogel emphasized children and families who have no choice but to breathe the toxic air where they live will suffer the most.

"We're seeing this administration signal to companies that they can just continue to pollute in the name of either a so-called energy emergency or a national security issue," Vogel added.

Nearly 10,000 West Virginia children per year will suffer asthma attacks because of ozone from the oil and gas industry, and in 28 counties residents face higher cancer risks, according to the Clean Air Task Force.

The decades-long decline of Pennsylvania's coal industry could shift in another direction after a series of executive orders by President Donald Trump - although current market trends indicate it's unlikely.

Coal-fired power plants made up just over 16% of U.S. electricity in 2023. That's half what it was a decade ago.

Tom Schuster, director of the Sierra Club of Pennsylvania, said the coal industry is in irreversible decline that executive orders most likely can't change.

He said it's been outpaced by renewable energy, which has now surpassed coal in electricity generation over a 12 month period.

"Unfortunately," said Schuster, "what this order could do is expose people to higher electricity costs by keeping unprofitable plants online longer, and also jeopardize people's health by exempting them from environmental regulations."

The orders direct agencies like the Environmental Protection Agency to ease restrictions on coal, which the president suggests could help meet rising energy demands of manufacturing and AI data centers.

Schuster said these actions are part of broader deregulation, and that Pennsylvanians know the risks of unchecked coal use.

He said in today's market, relying on coal to meet power demands is no longer viable.

One executive order claims mining and burning coal will bring back good-paying jobs, but Schuster said that's unlikely.

He pointed out that coal generated about half of Pennsylvania's electricity 15 years ago, but now makes up only 10% - and he said reopening retired plants isn't economical.

"There's only two conventional coal-fired power plants left in Pennsylvania," said Schuster. "There's a handful of smaller specialty plants that burn coal refuse, but it's a relatively small part of our energy generation today, so I don't think the economic impact in terms of coal-fired generation is going to be that much."

An executive order also aims to boost coal exports. Pennsylvania exports a fair amount of its coal, mainly to China - but the trade war and retaliatory tariffs could stymie that effort.