This image of Earth captures the 2017 eclipse shadow.  NASA

Get dirty. Get wet. Have fun. Love your mother.

Celebrate our planet’s beauty and bounty at one of many Earth Day events in the region this weekend and beyond. You can pick up trash, kayak a river and even get sustainable fashion tips and tricks. 

The official observation of Earth Day 2024 is Monday, April 22, but ways to give back and respect the Earth abound for days before and after. Here’s a sampling of observations and activities. And remember: Every day should be Earth Day.

Knoxville

— Little River Watershed Association plans its annual cleanup and paddle for 12-4 p.m. Saturday, April 20. Participants will put in at Peery’s Mill near Townsend and remove trash from the river for about three hours before taking out at Sevierville Bridge. Albright Grove Brewery will offer beer after the cleanup. A limited number of kayaks are available for use, and a shuttle is available. Get more information and sign up here.

— Keep Knoxville Beautiful will hold the South Knoxville Community Cleanup from 9 a.m. until noon Saturday, April 20 starting at Mary Vestal Park, 522 Maryville Pike, Knoxville. The group is removing litter from South Knoxville streams, roads and parks. All reserved spots are full, but Amanda Seale, director of programs for Keep Knoxville Beautiful said her group still welcomes help from anyone who shows up.

— The third annual Fleurish: A Sustainable Fashion Event (and Fundraiser) at Ijams Nature Center will bring eco-friendly and sustainable Punk vs. Funk designs to the runway Sunday, April 21. Tickets are $30 and are available at Ijams.org/fleurish. All proceeds support Ijams Nature Center. The cocktail hour from 6 until 7 p.m. will feature photo ops on the “green” carpet, education stations and information about conservation efforts in the fashion realm, as well as a cash bar featuring punk and funk signature cocktails, and food from Coffee & Chocolate, Cafe 4, and The Kennedy. The fashion show will feature clothing with sustainable, reused and recycled materials from 25 designers. Following the fashion show, attendees will be able to meet the artists, designers, and models on the nature center’s hillside. Brent Hyder and Duck Experience will provide live music. Ijams Visitor Services Director Sarah Brobst said there may be some surprise elements as well.

“Fleurish shows how the average consumer can make changes to their day-to-day lives while never losing sight of the beauty of nature and the human experience,” she said. She encouraged the audience to come dressed in their favorite punk or funk fashions.

— The University of Tennessee will host an Earth Day Festival from 11 until 2 p.m. April 22 at the Student Union Plaza.

“Come meet campus and community organizations, enter some giveaways, participate in sustainable activities, and more!,” according to organizers. Other Earth Week events will continue on and near the campus that week. A full list of them is online. 

Supercomputer simulation of plasma turbulence in a spherical tokamak, which is an experimental machine designed to harness the energy of fusion.  Image courtesy of Walter Guttenfelder, Princeton Plasma Physics Laboratory and Filippo Scotti, Lawrence Livermore National Laboratory via DOE.

Fusion research, natural gas, solar power and battery improvements at heart of TVA’s plans to wean itself off coal

OAK RIDGE — The Tennessee Valley Authority is phasing out coal and announcing developments tied to other energy sources at two plants that sit on either side of Oak Ridge.

One of the options includes a fusion test site. Scientists have long pursued fusion energy, though the technology remains in infancy and has yet to generate electricity anywhere.

The TVA coal plant on Edgemoor Road in the Claxton community in Anderson County closed Dec. 1 last year. TVA remains uncommitted to any plans for most of the land around the plant. A company recently announced, however, that it plans tests connected to fusion power in a small part of one of Bull Run’s old buildings by 2028. It will be an experiment and not generate power directly.

Meanwhile, TVA plans to retire Kingston Fossil Plant on Swan Pond Road in Harriman by the end of 2027. Its nine coal-fired units power about 818,000 homes. To replace the power generated at the plant, TVA plans to build a new complex at the Kingston plant’s site, combining natural gas, solar power and battery storage.

TVA plans to retire all its coal plants by the 2030s.

From Cataloochee to Cherohala: Officials pondering ways to spread the love

GATLINBURG — With ever more people crowding Great Smoky Mountains National Park, should the park and others encourage them to go somewhere else?

Enter “de-marketing:” A presentation at the 2024 Great Smoky Mountains Science Colloquium laid out a study examining ways to draw people away from Great Smoky Mountains National Park and toward the Cherohala Skyway. The colloquium, sponsored by Discover Life in America, can be found on YouTube along with other presentations from the day, ranging from elk to ozone’s effects on plants. Justin M. Beall gave the presentation on crowds and de-marketing and said he conducted the research while at North Carolina State University. His was the only social science presentation of the day.

“That doesn’t mean we want to stop people from getting outdoors,” Beall said. “It just involves trying to convince visitors, maybe on their next trip, to explore a less visited destination in order to reduce crowding in certain spots.” He called it “diversion de-marketing” and said it was better than other de-marketing strategies. Two such other de-marketing strategies — forcing people to make reservations or raising the prices — he said, might price out people who earn less money or could confuse and frustrate visitors.

Beall said his study involved giving brochures to people at Alum Cave and Laurel Falls trailheads and Clingmans Dome. One focused on nature opportunities at Cherohala Skyway; one focused on social media photo and video posting opportunities there; and a third was more “of a boring control” in its approach to promoting the Skyway. His team distributed 500 surveys, evenly divided by both site and type of brochure. He said he expected to be there for 10 days but the group finished it in a little more than three days.

That “is amazing from a social sciences perspective, but I think again it shows you during these peak visitation times, such as peak leaf season, how many visitors can actually be in the park at one time,” he said.

Methane emissions, such as those that emanate from this oil well on federal property, are being capped across federal land in the Southeast thanks to a Biden Administration grant.  NPS

Even federally protected areas can be full of old oil and gas wells, and they may need plugging to avoid releasing gas into the air.

ONEIDA — Eric Bruseth of the National Park Service Geologic Resources Division gave a talk on this issue in Historic Rugby at the 2024 Science Meeting, March 13.

Two Tennessee National Park Service areas — Big South Fork National River and Recreation Area near Oneida, straddling the Kentucky state line, and Obed Wild and Scenic River near Wartburg — have over 300 oil and gas wells total throughout the parks. The wells are left over from a time before they were public land. The earliest go back to the 19^th century. The danger, Bruseth said, comes from the methane these wells can continue to release.

“Methane as a greenhouse gas can be up to 80 times more potent than carbon dioxide as far as trapping heat in the atmosphere. So smaller sources can have a bigger impact,” Bruseth said.

Many such new identifying tags highlight trees such as this red cedar in the newly designated Sequoyah Hills Arboretum near Bearden in Knoxville.  Ben Pounds/Hellbender Press

The arboretum designation will  allow for more extensive tree walks, scout projects, school outings, and other educational programs on the value and beauty of native trees

KNOXVILLE — A small crowd of volunteers with tags and tools descended on Sequoyah Park on a February afternoon, preparing to affix identifying labels to the bark of old trees in one of the city’s most storied neighborhoods.

Sequoyah Park sits along the Tennessee River at 1400 Cherokee Boulevard, tucked behind the Sequoyah Hills neighborhood but open to all who want to run, walk, cycle, or enjoy its open fields and other features. It’s Tennessee Valley Authority land, maintained by the city. The many species of native trees that tower over the park’s long field got recognition this year. The park and other Sequoyah Hills neighborhood areas are now part of the Sequoyah Hills Arboretum, an accredited level one ArbNet arboretum.

A public playground near the site of the since-decommissioned Bull Run coal plant in Claxton, Tenn. Tennessee Valley Authority is weighing options for the site’s future.  Abigail Baxter/Hellbender Press

Solar production and public green space remain options; coal ash questions remain

CLAXTON — Tennessee Valley Authority will demolish most structures at Bull Run Fossil Plant but has not yet shared plans for the ultimate disposition or reuse of the property.

Bull Run Fossil Plant was a coal-fired plant in the Claxton community, located just outside of Oak Ridge in Anderson County, Tenn. The plant opened in 1967. TVA closed it in 2023, and plans to phase out all its coal fired plants by 203.

The utility and its spokesman Scott Brooks have listed the scrubbers, coal handling structures and the large chimney, nicknamed the “lighthouse” by locals, as structures that will likely come down.

TVA has listed some possibilities for the site, including battery storage, park areas, “economic development” and a synchronous condenser, which is a device meant to keep the overall grid's power supply stable without generating any power of its own. This last option would involve keeping and repurposing the turbine building. TVA has not committed to any of these ideas.

The Tennessee Valley Authority’s Bob Deacy shows U.S. Department of Energy secretary Jennifer Granholm the site of a future nuclear reactor in Oak Ridge.  Ben Pounds/Tennessee Lookout

DOE chief: Little nuke plants posited to provide clean energy 

This story was originally published by Tennessee Lookout.

OAK RIDGE — U.S. Department of Energy Secretary Jennifer Granholm visited the site of a possible first-of-its-kind nuclear reactor for the Tennessee Valley Authority this week. 

The utility’s board authorized $200 million to explore building a reactor on the site last year after the Nuclear Regulatory Commission gave TVA an early site permit in 2019. 

This first-of-its-kind small modular reactor would be smaller than standard nuclear reactors and generate less power, but it could have other advantages. While typical nuclear power plants need to provide power at 100 percent of their capacity constantly, a small modular reactor can more easily increase or decrease the amount of power it provides to the overall grid. Melinda Hunter, TVA nuclear communication specialist explained that this flexibility can complement renewable plants elsewhere in the TVA grid.

“When the sun’s not shining, you can bring the power up,” she said, adding that during sunnier periods the small modular reactors can provide less power.

TVA CEO Jeff Lyash said the utility will likely start building its first reactor on the site in 2027 and finish by the early 2030s. TVA is looking to build four of these reactors on the site, but it’s not made a final decision on the first one yet. Each reactor would generate 300 megawatts. 

Bull Run Fossil Plant in Anderson County, Tennessee, is officially offline as of Dec. 1, 2023, according to the Tennessee Valley Authority.  Abigail Baxter/Hellbender Press

TVA retires coal-fired plant; just four more to go

OAK RIDGE — The Tennessee Valley Authority took another step toward its goal to phase out all its coal plants by 2035.

TVA officially announced Bull Run Fossil Plant, at 1265 Edgemoor Road in Anderson County’s Claxton community, closed on Friday, Dec. 1. The TVA board decided to close the plant four years earlier on Feb. 14, 2019. Now the utility says it plans to retire all of its coal plants by 2035. The utility has cited the environment and efficiency as reasons for closing the plants. TVA plans to create solar and natural gas plants to replace the power formerly generated by coal. TVA has not made final plans for the Bull Run site.

“It’s not an easy decision to retire a plant, but it’s one we must make to secure a reliable and cleaner energy future as our generation portfolio and load shapes change,” Jacinda Woodward, senior vice president of power operations, said in a press release. 

EPA consolidated toxic South Knoxville smelter refuse in single on-site landfill.

KNOXVILLE — The Smokey Mountain Smelters site is in the Vestal Community at 1508 Maryville Pike near Montgomery Village Apartments.

“We are excited to announce the cleanup at Smokey Mountain Smelters has been completed,” EPA remedial project manager Peter Johnson said.

From the 1920s through the 1960s, agricultural and chemical companies operated at the site before Smokey Mountain Smelters, also known as Rotary Furnace Inc., came to the location in 1979. The company melted scrap aluminum and aluminum dross together to cast the byproduct into aluminum bars. These operations continued until 1994.

Johnson has said in other talks the dross and saltcakes left over from the process react with water, releasing heat and ammonia gas. They leach aluminum, ammonia, chloride “and many other contaminants,” he said. Smokey Mountain Smelting’s toxins have flowed through groundwater into a tributary of Flenniken Branch, causing concerns about effects on fishing.

In 2010 the EPA placed the site on the Superfund program’s National Priorities List (NPL) because of contaminated soils, sediment and surface water resulting from past industrial operations at the site. The EPA did some cleanup work in 2010 and 2011.

Launching a raft for the rapids on the Ocoee River to raise awareness for TennGreen’s effort to acquire land along Clear Creek in Morgan County.  Ben Pounds/Hellbender Press 

A raft trip on the Ocoee helped save faraway Clear Creek

DUCKTOWN — We threw our backs into paddling as the raft dipped and crested.

We were on the Ocoee River in southeastern Tennessee, but Clear Creek, 118 miles away in Morgan County, was the reason for the occasion.

I joined the group, some of whom were staying in nearby cabins overnight, for rafting and a cookout.

It was part of a TennGreen push to buy and preserve 180 acres of land along Clear Creek. It will then sell 23 of those acres, which includes a house. It will donate the rest to the Obed Wild and Scenic River, an adjoining federal conservation area.

Cool water deluged us, rapid after rapid. In one case we spun with momentum. We high-fived with our paddles when we hit clear spots after a successful run.

That evening, we unwound with hot dogs, burgers both vegetarian and meat, potato salad and s’mores among other treats at the Cabins at Copperhill.

TennGreen Deputy director Christie Henderson said buying the Clear Creek land would allow for a connected wilderness area in which plants and animals could have a safe corridor. It also would preserve the view of the night sky from potential light from new houses.