Thomas Fraser
Oak Ridge National Laboratory helps keep our cool as refrigerant restrictions begin
Brian Fricke, group leader for Building Equipment Research, conducts testing in his refrigeration system research lab at Oak Ridge National Laboratory. Jason Richards/ORNL
ORNL pursues refrigerant efficiencies and alternatives as we warm the Earth to keep things cold
You can flick it off; it’s cool.
Finally there’s a window, literally, for the annual retirement of your air conditioner. But the freezer aisles at your favorite supermarket aren’t going anywhere.As summer slowly slips into autumn and we aspire to warm ourselves through winter, let’s consider the cost, economically and environmentally, of keeping ourselves under blankets in August or loading up on frozen burritos on a broiling day inside the deliciously cool air of a grocery store freezer aisle.Let’s cast a cold eye toward Oak Ridge National Laboratory, where engineers are developing improved storage and transmission techniques to limit the harrowing climate-change effects of coolants and refrigerants, even as new pollution restrictions come into effect.Coolants have played a role in environmental change and global warming since the very advent of the crudest cooling devices.Refrigerants have even driven human-settlement patterns and development of areas with harsh, hot climates such as the American South and Southwest. They’ve been rough on the Earth’s atmosphere and played an oversized role in climate change.It’s kind of complicated:Chlorofluorocarbons (CFC) used in 20th-century cooling and refrigeration systems thinned the ozone layer.Then the hydrofluorocarbons (HFC) that replaced them turned out to be greenhouse gases that in some cases were 4,000 times more potent than carbon dioxide, itself a powerful driver of climate change.The recent federal climate change directive requires an 85-percent phaseout of HFCs over the next 15 years.So what will replace those coolants as heat waves associated with climate change only increase, in the near-term at least, the use of refrigerators and air conditioners across the world?Scientists and engineers at ORNL are working on the next generation of coolants — and the efficiency and safety of their delivery systems — as HFCs are phased out.Published in NewsPublished in NewsTagged under
Anti-nuke nun jailed after Y-12 protest dies at 91
News Sentinel: Nun who served time after Oak Ridge weapons protest dies in Pennsylvania
Sister Megan Rice, who along with two others were prosecuted by the federal government after breaking into the Y-12 nuclear weapons complex in Oak Ridge, died of congestive heart failure Oct. 10 in Rosemont, Pennsylvania.
Rice, a member of the order of the Society of the Holy Child Jesus, penetrated the secure perimeter of Y-12 in July 2012 along with two other Catholic activists for prayers and protests outside a bunker containing uranium, according to the Associated Press via the News Sentinel. The incident prompted numerous inquiries about the security of Y-12 and put the inherent danger of nuclear armament in the media spotlight.
The trio was charged with felony sabotage but served only two years of their federal prison terms.
“While testifying during her jury trial, Rice defended her decision to break into the Oak Ridge uranium facility as an attempt to stop “manufacturing that...can only cause death,” according to a trial transcript.'
“I had to do it,” she said of her decision to break the law.
“My guilt is that I waited 70 years to be able to speak what I knew in my conscience.”
Requiem for the Lord God Bird
The ivory-billed woodpecker is officially extinct, and it strikes a chord in Knoxville
Clinging to a maple in the bayou, Jim Tanner finally had the rare nestling in his grasp.
He fitted it with a numbered leg band and placed the bird back in its hole high off the ground.
But true to its seldom-seen self, the juvenile ivory-billed woodpecker squirmed free and fluttered to the base of a giant maple tree in a southern Louisiana swamp owned at the time by the Singer Sewing Machine Co.
The year was 1936, and Jim Tanner was in the midst of doctorate research at Cornell University funded by the Audubon Society as part of a push to prevent the pending extinctions of multiple bird species, including the California condor, roseate spoonbill, whooping crane and ivory-billed woodpecker. Eighty-five years later, the regal woodpecker would be the only one grounded for eternity.
In the heat and rain of mucky, gassy bayous, Tanner compiled data on the range, population, habitat and prevalence of ivory-billed woodpeckers. He camped for weeks at a time in the swamps of the birds’ original range.
On this day, his only goal was to band the bird but he rushed down the tree and picked up the agitated but uninjured woodpecker.
He also wanted photographs.
Tanner took advantage of the moment.
He placed the bird upon the shoulder of an accompanying and accommodating game warden for 14 shots from his Leica.
They were probably the first, and perhaps the last, photographs of a juvenile ivory-billed woodpecker photographed by Tanner in its natural habitat. He named the bird Sonny, and he was the only known member of the species to be banded with a number.
The regal, smart, athletic bird, which peaceably flew over its small slice of Earth for some 10,000 years, was declared extinct last month by the Fish and Wildlife Service. Twenty-two other species also qualified for removal from the Endangered Species List — in the worst possible way.
The ivory bill inhabited the swamps of the Deep South, far removed from Rocky Top, but old visages of the departed were found in Little Switzerland in South Knoxville. The work of Tanner, who would go on to complete a rich ecological research career at the University of Tennessee, has been memorialized by a talented East Tennessee science writer.
And the Southern Appalachian region has other long-gone kinships with species that vanished from the Earth a long time ago.
Permafrost is a ticking methane bomb
Smithsonian: In Russia, even rocks emit greenhouse gases
The melting Siberian tundra north of the Arctic Circle released millions of tons of methane last year as regional temperatures rose to 11 degrees (°F) above average.
Methane has a shorter effect than carbon dioxide on global atmospheric change but is still 70 times more potent than CO2 in its overall global-warming potential. Its accelerated release on such a vast scale represents an immediate challenge to restricting overall global warming to less than 3 degrees (°F) by the end of the century, which scientists agree is necessary to prevent dramatic climate change. Methane’s potent global warming potential is why many conservationists oppose the use of natural gas as an energy source.
But in Siberia, even the rocks are emitting methane. Scientists were surprised to find that limestone exposed by disappearing permafrost itself generated high levels of methane. Tundra fires have also accelerated the release of methane and other gases, and have come at great cost to the Russian government and the rural inhabitants of the vast region.
That means economical and practical means must be developed elsewhere, at least, for methane management.
But according to the United Nations Economic Council for Europe:
“Despite methane’s short residence time, the fact that it has a much higher warming potential than CO2 and that its atmospheric volumes are continuously replenished make effective methane management a potentially important element in countries’ climate change mitigation strategies. As of today, however, there is neither a common technological approach to monitoring and recording methane emissions, nor a standard method for reporting them.“
ORNL’s comprehensive mapping of built environments aids disaster response
Compass: ORNL mapping effort will aid rescue, risk assessment
Oak Ridge National Laboratory scientists spent five years mapping virtually every structure in the U.S. and the data is bearing early fruit as it is used for response to disasters such as hurricanes and severe floods.
Mark Tuttle and Melanie Lavardiere, the team leaders of the project, have mapped “virtually every single structure in the United States and its territories,” Compass reports.
The information is used by disaster responders from the FEMA level and down. During a hurricane, for example, authorities can focus response efforts on the most vulnerable areas using the building-mapping database.
The database can also be used by insurers to charge rates more according to risk, and for structures covered under the National Flood Insurance Program, as is already happening.
But the data is most valuable for saving lives and determining the most likely location those lives will have to be saved.
“After disaster strikes, the data can give a rapid indication of the scope of the damage and point responders in the right direction to assist in the recovery. Using the powerful computers available at ORNL, the team can process data quickly — producing in a matter of hours work that used to take months — and get it into FEMA’s hands for analysis,” Compass reports.
Feds reopen plans for long-delayed 9-mile Foothills Parkway segment from Wears Valley to Gatlinburg near Great Smoky Mountains National Park

Plans for new parkway segment were hatched long ago; project would also include improvements to Wears Valley park entrance
Just a few years after the “Missing Link” of the Foothills Parkway was finally finished following decades-long delays, the National Park Service now has its sights set on constructing a new 10-mile section of parkway on the Tennessee side of Great Smoky Mountains National Park that would extend from Wears Valley to the heavily traveled Gatlinburg Spur.
The leg of the roadway has long been included in a plan for full completion of the parkway. About 30 miles have been completed from Tallassee, Tennessee to Wears Valley. This section would extend from the current parkway terminus in Wears Valley to the Gatlinburg Spur near Pigeon Forge.
Park officials said in a press release announcing the opening of the project’s public comment period that the unfinished section is the only stretch of incomplete, congressionally approved roadway in the U.S.
Catch a beer and documentary on the importance of freshwater fish and their current swim into oblivion
Albright Grove Brewing Company will host a viewing Wednesday, Sept. 29 of “Hidden Rivers,” a documentary detailing the smaller, gilled denizens of Southern Appalachian creeks, rivers and streams and the threats they face.
The screening of “Hidden Rivers” by Freshwaters Illustrated is planned for 6 p.m. at Albright Grove Brewing, 2924 Sutherland Ave. in Knoxville.
“This film aims to show off the stunning freshwater biodiversity of the Southern Appalachian region, and to highlight conservation efforts, beauty, and vulnerability of these ecosystems,” according to Conservation Fisheries, a Knoxville-based nonprofit geared toward the preservation of native Appalachian fishes and their ecosystems.
Conservation Fisheries is in its 35th year of breeding, sharing and releasing broods of threatened fishes collected from points ranging from the Conasauga River to Little River and beyond.
Another slice of the wild preserved in Cumberlands
Knox News: Nearly 12,000 acres added to Skinner Mountain preserve on the Cumberland Plateau
The Conservation Fund and state wildlife and forestry officials reached a deal to conserve and manage thousands of wild acres in Fentress County.
The expanse was previously held by an out-of-state speculative investment company likely originally tied to timber companies.
The Cumberland Plateau and escarpments have been increasingly recognized for their biodiversity along with the Smokies to the east beyond the Tennessee Valley. The Cumberlands are along a songbird and fowl migration route, and host a niche population of mature timber, mosses, lichens, fungi, mammals and amphibians. Elk were reintroduced a decade ago, and black bears have begun to range across the Cumberlands and their base.
The area is pocked with caves and sinkholes, some containing petroglyphs and other carvings from previous populations.
"On the Cumberland Plateau, the key to maintaining biodiversity is to retain as much natural forest (both managed and unmanaged) as possible," a forestry expert told the News Sentinel's Vincent Gabrielle.
The Foothills Land Conservancy has also helped protect thousands of acres along the plateau and its escarpments in recent years.
Pellissippi Parkway punches: Vocal opposition slams highway extension plans at public meeting

UPDATED: Opponents of Pellissippi Parkway Extension hammer bureaucrats, unelected economic development officials at public meeting
(This story has been updated with this link to the Tennessee Department of Transportation recording of the Sept. 21 public hearing on the proposed Pellissippi Parkway Extension project).
Raw emotions spilled over at a Tennessee Department of Transportation public meeting to collect citizen input on a nearly 5-mile, four-lane highway that would carve through creeks, forests, farms and homes in rural Blount County in the foothills of the Great Smoky Mountains.
The meeting was held Tuesday evening at Heritage High School, not far from where the proposed Pellissippi Parkway Extension (which would originate at the terminus of the current parkway near Rockford) would abruptly bisect East Lamar Alexander Parkway, just to the west of Walland Gap and the Little River Gorge.
As Hellbender Press has reported on the Pellissippi extension, many people aren’t happy with the proposition of spending at least $100 million on a 4.5-mile stretch of highway, and people are uncomfortable with both the use of eminent domain to force them from their homes or seize portions of their property and the unavoidable and long-lasting environmental and cultural impact such a project would have on the rural areas of Blount County. The projected cost of the project has vacillated by millions of dollars.
East Lamar Alexander Parkway (U.S. 321) terminates in Townsend; along the way are turnoffs to many valuable pieces of real estate and immensely successful high-end hospitality venues, such as Blackberry Farm. Hellbender Press reached out to Blackberry Farm through its Nashville-based public relations team about the nearby highway project and was simply told “we have no comment.”
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Share your ride and learn about other electric whips during Drive Electric Week
One of the biggest electric vehicle loads in state history is set for Saturday at Pellissippi State Community College in Knoxville.
The Knoxville Electric Vehicle Association; Pellissippi State Community College; and Drive Electric Tennessee are all plugging to make the 2021 Knoxville Drive Electric Week Event the largest ever in the state, according to organizers.
Vendors, test drives and educational activities will be held on the PSCC Hardin Valley campus just off Pellissippi Parkway from 10 a.m. to 3 p.m. Saturday, Sept. 25.
The only criteria for displaying your electric scooter, ATV, car or motorcycle: They must be plugged in to recharge. Everyone who drives an electric vehicle, or is interested in alternative fuel sources, is welcome to attend.
