The Environmental Journal of Southern Appalachia

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Less carbon, more chill: ORNL tech reduces refrigerator CO2 emissions by 30 percent

ORNLfridgeA novel technology developed by ORNL keeps food and beverages refrigerated with an advanced evaporator, phase change materials, metal foam, direct-contact defrosting technology and a low global warming refrigerant.  Oak Ridge National Laboratory 

OAK RIDGE — A technology developed by Oak Ridge National Laboratory keeps food refrigerated with phase-change materials, or PCMs, while reducing carbon emissions by 30 percent.

More than 100 million household refrigerators in operation across the United States consume up to 2 kilowatts of electricity daily. These refrigerators contribute to energy consumption and carbon emissions by using compressors that cycle on and off day and night, pumping refrigerants across evaporator coils to maintain low temperatures for fresh and frozen compartments. 

(Hellbender Press previously reported on the development of new coolants and systems at ORNL).

ORNL’s innovation uses advanced evaporators with PCMs installed in each compartment for cold energy storage. PCMs are useful for heating and cooling because they store and release energy when changing from solids to liquids or vice versa. Researchers applied porous metals, direct-contact defrosting technology and a refrigerant with low-global-warming potential to enhance performance and minimize environmental impact.

“PCMs are integrated with evaporator coils to keep temperature constant, requiring one operating cycle and allowing refrigerators to operate almost 100% at nighttime, when energy use is lower,” ORNL’s Zhiming Gao said. “This reduces electricity demand, saves costs and maintains efficiency.”

— Oak Ridge National Laboratory

Wednesday, 05 June 2024 20:03

HBG Program: Cryptocurrencies and Climate Change Casualties

images 1

KNOXVILLE John Nolt, a member of the Sierra Club’s Harvey Broome Group executive committee and professor emeritus in philosophy at the University of Tennessee, will present a program about cryptocurrencies and their detrimental long-term effects on the environment. Cryptocurrency “mines” (data centers, really) pull enormous quantities of power from the electrical grid.

Thus they are attracted to states like Tennessee where electric power is relatively cheap.

The event is set for 7-8:30 p.m. June 11 at the Tennessee Valley Unitarian Universalist Church, 2931 Kingston Pike, Knoxville.

Last modified on Monday, 17 June 2024 15:13

peerys mill damPeery’s Mill Dam on the Little River is slated for removal by the Army Corps of Engineers for environmental and public safety reasons.  Elan Young/Hellbender Press

Army Corps still committed to Little River dam removal for ecological and safety reasons, but timeline uncertain 

TOWNSEND — The remainders of two low-head dams on the Little River in Blount County, Rockford Dam and Peery’s Mill Dam, are slated for removal by the United States Army Corps of Engineers (USACE) following the release in July 2023 of a Project Report and Environmental Assessment that investigated the lower 32 miles of the Little River.

The Corps confirmed this week that plans are moving ahead to remove the two dams. 

Peery’s Mill Dam was the site of 4 separate drownings in the last 15 years, giving it the notorious reputation as the deadliest dam in Tennessee in the past quarter century. Late last month, three women had to be rescued from the churning waters there, prompting questions from the community about the status of the Corps’ removal effort. 

Little River Watershed Association president Andrew Gunnoe says that watershed advocates are eager for the dam removal project to move forward because doing so would provide both ecological and community benefits. 

Last modified on Thursday, 27 June 2024 18:21
Wednesday, 05 June 2024 18:07

Learn the basics and beauty of freshwater snorkeling at a Conservation Fisheries panel

HEAD1Andrew Zimmerman

KNOXVILLE — Join Conservation Fisheries, Inc. and other experts for a discussion on how to HEAD UNDERWATER to snorkel and enjoy the beautiful underwater biodiversity of the Southern Appalachians.

The free event is set for 6-8 p.m. June 15 at Remedy Coffee, 800 Tyson Place, Knoxville.

The panel will be led by CFI Director Bo Baxter; Casper Cox from Hidden Rivers of Southern Appalachia; Jennifer Webster from Little River Watershed Association; and TVA Fisheries Biologist Justin Wolbert. 

Last modified on Monday, 17 June 2024 09:48

Eastern spotted skunk handstand Agnieszka Bacal.An eastern spotted skunk is seen in its signature defensive handstand. If the stance doesn’t deter predators it will let loose a caustic and malodorous spray akin to mace.  Agnieszka Bacal via Virginia Department of Wildlife Resources

Striped skunks thrive as spotted cousins decline

This story was originally published by The Appalachian Voice.

BOONE — A characteristic white stripe on a black pelt is an instant warning to tread gently.

Nature’s stink bomb, the striped skunk (Mephitis mephitis) carries this distinctive mark on its back. But Appalachia has a second variety of this master of malodor, marked instead by a blotchy pattern of black and white fur.

The eastern spotted skunk (Spilogale putorius), was not always as rare as it is today. Decades ago, it was relatively common for trappers to catch the polecat, as it’s also known, for its pelt. But spotted skunk populations crashed between 1940 and 1970, according to a landmark paper from the University of Missouri looking at harvest data from trappers. By the 1980s, the study found, harvest numbers had plummeted by 99 percent, reflecting a steep decline in the skunk’s population.

Meanwhile, the spotted skunk’s striped cousin has thrived throughout the United States. So why have their populations diverged so drastically?

SpottedSkunkStudyBlogA spotted skunk trapped as part of Emily Thorne’s Virginia Tech study of the animals.  Emily Thorne

Last modified on Monday, 03 June 2024 16:06

IMG 0793 1Cleanup crews clear a section of roadway in Big South Fork National River and Recreation Area following storms that swept the park May 26.  National Park Service

Search came as Big South Fork cleans up after May 26 storm that brought May rainfall total to 12 inches

WARTBURG — Searchers found the body of a man that was the subject of a search that began Memorial Day after he was swept away by high water in Daddy’s Creek in the Catoosa Wildlife Management Area in Morgan County. 

Morgan County emergency management director Ethan Webb late Friday identified the victim as 57-year-old Wade Davis, originally identified by authorities as a Cumberland County resident. National Park Service personnel recovered the body about a mile downstream from Devils Breakfast Table near the Obed River. It is a rugged, steep area traversed by the Cumberland Trail.

Daddy’s Creek is a popular kayaking destination featuring class III and IV rapids that flows into the Obed River. Heavy rain had swollen the creek out of its banks, Webb said. Davis was with a family member when he lost his footing while wading and was swept downstream.

Multiple agencies were involved in the search “by air, by water and by land,” Webb said. “There wasn’t a day we didn’t search.” Drones, inflatable boats and a Highway Patrol helicopter were used. At least 25 people were involved at some point during the search, which was complicated by the speed of the water and rapids.

“We were in constant contact with the family,” he said. On Friday, the family received at least a measure of closure.

Published in News, Earth
Last modified on Tuesday, 18 June 2024 12:24

TWRA recovers body of teenage drowning victim

TWRA logo

ROCKWOOD — Tennessee Wildlife Resources Agency officers and local agencies recovered the body of Roane County resident, 19-year-old Braeden Hartup, from Watts Bar Reservoir just after 2 a.m. May 26. 

The initial 911 call, concerning a male who had jumped from a boat and did not resurface, came in just after 9 p.m. May 25. Hartup and 10 others were on an anchored pontoon just south of Rockwood, near the Winton Chapel Access Area. Witnesses stated that Hartup decided to swim and jumped into the water from the front of the boat. Hartup was not wearing a life jacket. 

TWRA officers and local agencies used a remote-operated vehicle to locate and recover Hartup’s body in 24 feet of water. The body was transported to the Knox County Medical Examiner’s Office. This is the eighth boating related fatality this year. The incident remains under investigation. 

Find boating and statistical information at tnwildlife.org.

Published in Feedbag, Water

One person hung on for dear life as big waves churned back and forth for minutes. 

hanging onThanks to our friends at Compass for linking our original coverage and pointing us to the video of the spine-chilling incident. Tap the More…  button to access the full original article, which begins below, and the video from which we snapped this frame.

 

Mead’s Quarry lakeshore after the rockslideTowels, shoes, plastic toys and sunglasses were among the items left behind Saturday afternoon when dozens of people were forced to flee as powerful waves battered the shoreline after a rockslide at Mead’s Quarry Lake.  J.J. Stambaugh/Hellbender Press

At least one person transported by ambulance; witness describes other injuries at Mead’s Quarry

KNOXVILLE — Calvin Sebourn was one of dozens of men, women and children who found themselves fighting for their lives Saturday afternoon at Mead’s Quarry Lake when a sudden rockslide triggered 10-foot-tall waves that inundated the opposite shore. 

Luckily, it appeared that no more than five people received minor injuries and only one of them was hurt badly enough to warrant an ambulance trip to a nearby hospital. 

The quarry is one of the most popular attractions at Ijams Nature Center in South Knoxville, and authorities said Saturday night it would be closed until further notice while the site is inspected. 

Published in News, Earth
Last modified on Saturday, 22 June 2024 01:33

The species is listed as endangered in the state of Tennessee; zoo heads up years-long conservation effort

This Nashville Zoo blog post is reprinted with permission. 

NASHVILLE — Nashville Zoo’s ectotherm team, in partnership with Tennessee Wildlife Resources Agency and Tennessee State University, traveled to a waterway in Middle Tennessee to successfully release a total of 27 eastern hellbender salamanders back into the wild. These hellbenders had been raised since 2018 at the Zoo as part of a headstart program. Since the start of this conservation initiative, the Zoo has released more than 100 hellbenders into local Tennessee streams to help bolster the population of this state-endangered species.

The hellbenders released this year had been raised since 2018 at the Zoo as part of a headstart program, after being collected as eggs from streams in Middle Tennessee. Each animal was fitted with a radio transmitter earlier this year, allowing a team of graduate students to track and monitor the hellbenders throughout the summer. This is the fourth group of hellbenders to be released back into the wild since the summer of 2021.

Last modified on Saturday, 25 May 2024 00:36
Thursday, 23 May 2024 17:49

Learn about TVA’s switch from coal to natural gas at June 12 teach-in

 AppVoices 25th anniversary logo horiz white outline
Join Appalachian Voices and allies for a teach-in examining the Tennessee Valley Authority’s plans to replace coal with natural gas as its primary energy source in many locations.
 
The event is set for 6 p.m. June 12 at the Birdhouse Neighborhood Center, 804 N. 4th Ave. near the 4th and Gill neighborhood in Knoxville. Food will be served until 6:30 p.m. outdoors; attendees are asked to wear masks indoors.
 
TVA is gearing up for the largest gas buildout of any utility this decade, swapping coal for gas. This would include a new gas plant at the site of the Kingston Coal Ash Spill, and the 122-mile Ridgeline pipeline.
 
Ridgeline would be built and owned by the multibillion-dollar company Enbridge Inc., and affect state waterways in more than 400 locations.
 
The TVA Board of Directors could stop this project, and the gas buildout, in its tracks.
Last modified on Monday, 17 June 2024 15:09

Duck River 023 2048x1366 John McEwan, whose family has lived on the banks of the Duck River since the 1860s, skips stones on the Duck River. Environmental groups fear excessive demand is fueling drawdowns that are affecting the rich biodiversity of the Middle Tennessee river.&nsp; Tennessee Lookout/John Partipilo

Long time residents and conservation groups say industry lured by the state, population growth are draining water from a river prized for its biodiversity

This story was originally published by Tennessee Lookout.

COLUMBIA ­­— When Gov. Bill Lee announced the state had lured a General Motors lithium battery supplier to Spring Hill three years ago, it was his largest economic announcement to date:

A $2.6 billion corporate investment; 1,300 new jobs; a major stepstone along Tennessee’s path to become an EV hub — helped along by a then-record $46,000 per job in taxpayer incentives.

The factory deal’s less conspicuous specs — its continuous need for 1.4 million gallons of water per day — is now figuring in a larger battle pitting citizens and conservation groups against state environmental regulators.

Last month, the Tennessee Department of Environment and Conservation (TDEC) granted permission to Columbia Power and Water Systems — which pumps water to the new Ultium Cells plant — to increase its current withdrawals from the Duck River by 60 percent.

It’s one of eight water companies along the Duck River seeking to dramatically increase water draws to meet rising demands for water in the rapidly growing five-county region southwest of Nashville. 

Last modified on Friday, 24 May 2024 16:10

Golden Press Card clear 

The honor continues Hellbender Press’s tradition of excellence in journalism.

KNOXVILLE — Hellbender Press: The Environmental Journal of Southern Appalachia, was honored with a first-place award by the East Tennessee Society of Professional Journalists (ETSPJ) for its probe into a controversial municipal airport proposed by the city of Oak Ridge.

Reporters Wolf Naegeli and Ben Pounds and Hellbender Press editor and publisher Thomas Fraser accepted the award during ETSPJ’s 2023 Golden Press Card awards, held May 16 at Maple Hall in downtown Knoxville. The honors, which are bestowed upon television, radio, print and digital media, “strive to honor the best journalism in the eastern region of Tennessee from the past year,” according to ETSPJ.

Hellbender Press was honored with first place in the digital space for its investigation into the proposed airport, which the city maintains would juice economic development, especially in the high-tech business realm. 

Last modified on Monday, 20 May 2024 21:48

IMG 3876Gerry Moll is seen in the native garden of his home in the 4th and Gill neighborhood of Knoxville in this file photo. Moll tends to his natural habitat in keeping with city codes protocols.  Ben Pounds/Hellbender Press

City: Overgrown lots don’t automatically qualify as wildlife habitat

KNOXVILLE — City government wants people to know that though “No Mow May” is a worthy observation there are still some protocols residents have to follow to avoid codes violations and potential fines.

The month of May is hyped as a prime time to refrain from cutting your grass or portions of your lawn to allow pollinating plants and the pollinators they support to get six legs up late spring and early summer nectar season. It’s also an occasion to consider the fact that traditional lawns are largely ecological deserts.

“No Mow May” is a quick and catchy name for a movement that aims far beyond not mowing the yard for a month,” according to Bee City USA, a proponent of keeping your yard real and wild when and where it is practical.

“It’s more than long grass and dandelion blooms. It’s a gateway to understanding how we share our lawns with many small creatures.”

It goes beyond bees and butterflies and other pollinating insects. Many ground-nesting birds are on the decline due to loss of grassy habitat. Native grasses also serve as habitat for small mammals such as rabbits and mice, which in turn provide a buffet for raptors such as owls, hawks and eagles.

Hellbender Press has reported on cultivation of such natural landscapes and habitats within the city limits. Groups such as the Native Plant Rescue Squad can also provide plants and guidance.

Last modified on Thursday, 16 May 2024 15:31
Monday, 13 May 2024 15:23

Celebrate National Trails Day with a work party in Oak Ridge

North Ridge Trail Trail Day 3

OAK RIDGE Tennessee Citizens for Wilderness Planning and the North Ridge Trail maintenance volunteers invite everyone to our 2024 National Trails Day work project on the North Ridge Trail.

Work on the Orchard Lane access trail will begin at 9 a.m. June 1.

The access trail is located along a water drainage route. Erosion along the ditch has made the trail difficult to follow. We will work to relocate the first 130 feet of the access trail away from the water route.

Bring drinking water, sunscreen, insect repellent and good gloves. TCWP will provide some work tools, but feel free to bring any of your personal tools, including grubbing tools such as mattocks, Pulaskis, fire rakes, rogue hoes and/or McLeods fire tools. After the work is completed, a pizza lunch will be provided a short drive from the work location.

Last modified on Monday, 17 June 2024 15:10

Hunter 5 2048x1366 Hunter Hollingsworth, at his family’s Benton County property, successfully sued the Tennessee Wildlife Resources Agency over unwarrantless searches of his property. An appellate court upheld a lower court ruling against the agency.  John Partipilo/Tennessee Lookout

This story was originally published by Tennessee Lookout.

In a blistering and unanimous opinion, the judges called TWRA’s legal defense of its tactics a “disturbing assertion of power on behalf of government.”

NASHVILLE — State game wardens cannot enter private property in Tennessee without a warrant, the state’s Court of Appeals ruled last week.

The decision puts in check a unique power wielded for decades by the Tennessee Wildlife Resources Agency to secretly patrol and surveil Tennesseans’ privately-owned lands for potential violations of hunting, fishing and wildlife laws.

TWRA officers don’t seek permission from a judge before entering private property, need no supervisor approval, keep no records of their searches and don’t inform property owners — sometimes donning camouflage or installing cameras to secretly monitor activities based on the suspicions of an individual officer.

The blistering and unanimous opinion by a three-judge panel compared TWRA’s tactics to British customs officials who were granted unlimited “writs” by the king of England to conduct arbitrary searches in the years leading to the Revolutionary War — abusive actions that would go on to inform the establishment of the U.S. Constitution’s 4th Amendment protecting Americans from illegal government searches and seizures. 

Published in News, Earth
Last modified on Thursday, 16 May 2024 15:11