Just like electric vehicles and solar farms, the bare bones of a large building can be environmentally friendly if constructed with certain supplies, and supporters of a new Minnesota law hope it spurs more use of cleaner materials for big projects.

This year, Minnesota adopted the Buy Clean Buy Fair Act. It initiates a process for requiring certain state construction projects, such as a government building larger than 50,000 square feet, to be built or renovated with steel, aluminum and concrete materials leaving less of a carbon footprint.

Justin Fay, senior lead of public affairs and advocacy for the nonprofit Fresh Energy, said it strikes a good balance between cutting pollution and keeping the building sector viable.

"It utterly disproves the notion that it's a choice between being economically successful or being clean," Fay contended. "We actually can do both."

The effort prioritizes buying sustainable building materials produced locally, helping to create demand for regional construction firms submitting bids. While industry researchers note the materials can be more expensive, the costs are offset by operational efficiencies for the structures. Next up, a task force will soon begin the process of phasing in standards under the law.

Abby Hornberger, Minnesota policy organizer for the BlueGreen Alliance, which has pushed for these pilot projects around the country, said the timing is crucial as the effects of climate change are becoming more apparent in the Midwest.

"As we experience more fluctuating temperatures in Minnesota, we're going to have even more infrastructure fixes that are needed," Hornberger stressed. "We're just trying to make sure that the products that we're buying at the state level are less emitting."

Hornberger added what stands out with Minnesota's program is the task force in charge of setting up the procurement standards will include voices speaking for those who have suffered from environmental injustice.

The bill was approved during the recent legislative session with broad support from a range of sectors, including groups tied to the construction industry.

A new study finds the autumn chore of raking leaves could be a disservice to budding plant life. The National Wildlife Federation found fallen leaves can be crucial to biodiversity. Experts find keeping leaves in a yard acts similar to mulch. They cover roots under plants, suppress weeds, and keep the soil moist. While the group's research finds this is common knowledge, only 25% of people surveyed said they actually leave the leaves.

Holly Shimizu, a board member with the American Horticultural Society, said for a lot pf people, it comes down to aesthetics.

"A lot of people, they love everything super neat and tidy, and if you're using leaves as your mulch, it's not going to have that same, like, totally tidy, neat look," she said. "It's going to be a little bit more natural looking."

But, she added the perception is slowly changing, as more people are working with nature in their gardens. The report reflects this shift as 82% of people surveyed are open to keeping leaves where they are to benefit wildlife.

While keeping leaves has benefits, there are limits to how well this can work.

David Mizejewski, a naturalist with the National Wildlife Federation, said a portion of the yard being covered with leaves can benefit wildlife, but leaving a couple inches of leaves on a lawn will kill it. Either way, bagging leaves is not a better alternative.

"Bagging them up and sending them to the landfill actually is a really bad thing," he said. "It really contributes some really nasty greenhouse gasses to the atmosphere that are a piece of climate change."

Mizejewski noted some states have taken action to keep leaves out of local landfills. The U.S. Composting Council finds 17 states have yard debris bans in place.

As more companies embrace sustainable practices, businesses in North Carolina are leading the charge through innovative initiatives with funds from the Inflation Reduction Act.

Brad Ives, former executive director of the Catawba College Center, seized on IRA funding to pioneer projects boosting the college's green initiatives.

"So the projects that we can do with the Inflation Reduction Act help us lower our emissions," he explained. "In particular, we're looking at Scope One emissions where we're burning natural gas or operating vehicles here on campus."

Ives added with the help of the IRA, the college has been able to work on projects such as replacing natural gas-fired clothes dryers and electric clothes dryers.

Ives suggested the IRA can greatly assist small businesses by offering financial aid programs such as grants, loans and tax incentives, making projects more cost efficient. He recommends companies start by connecting with peers, attending presentations and webinars, and staying updated on potential opportunities.

"Looking for RFPs to come out from entities like ours. We'll post from time to time that we've got an opportunity for somebody to come in and provide a good or service to us," he continued.

The IRA is estimated to invest over $21 billion in clean-energy tax incentives for North Carolina.

Vicki Lee Parker-High, North Carolina Business Council executive director, said the trend of more small businesses seeking to increase sustainability. She explained their organization is actively supporting members in exploring how the IRA can be beneficial across various industries, especially as environmental, social and corporate governance tracking becomes more important to companies looking to be more sustainable.

"We see that growing, and we don't see it slowing down anytime soon because we're seeing the larger corporations are starting to demand that the businesses along their supply chain also report and track their environmental and social impact," she continued.

Parker-High added the Inflation Reduction Act is proving to be a game-changer for small businesses in North Carolina, enabling them to actively contribute to environmental improvement while reaping financial benefits.

New research by ecology experts in Montana showed even small amounts of development can cause a widespread decline in stream biodiversity.

It does not take a new high-rise, bridge construction or freeway to have major effects on Montana's sensitive river and stream ecosystem.

Michael Sprague, founder and CEO of Livingston-based Trout Headwaters, said even small projects affecting less than 2% of a developed watershed cause significant loss of biodiversity in sensitive areas, and is especially harmful to aquatic life. It is evident in a number of ways.

"Diminishing vegetation, or peeling off topsoil or allowing excess erosion to occur on a site or some of these other things," Sprague explained.

Sprague added there are more chemicals winding up in rivers and streams now, too, which is also having a negative impact on waterway ecology.

Sprague argued even small roads and trails can have a major effect on biodiversity in Montana's waterways, often because roads are the first sign of development in ecologically sensitive areas.

"First of all, how is the road constructed? Is it stable? Is it eroding?," Sprague outlined. "Maybe you bisected a travel corridor for a species. Maybe you ran through some critical habitat or pushed that species off as a result of the road. Maybe that human access now by itself is causing migration."

Road building and development on environmentally sensitive lands remains an issue across the Plains states, where the ecology of rivers and streams is threatened, including on American Indian reservations.