Tennessee Tree Improvement Program director Scott Schlarbaum stands among a collection of grafted and cloned native trees at the program’s grafting facility off Alcoa Highway. Thomas Fraser/Hellbender Press

2-minute video on hemlock genetic diversity conservation added to this article on September 2, 2021

UT Tree Improvement Program prepares for its greatest grafting season yet

“What you have here is the future of Tennessee forests,” said Scott Schlarbaum, a professor and director of the University of Tennessee Tree Improvement Program.

You can tell from a chuckle he thinks his statement might sound hyperbolic and a bit dramatic, but it’s really not.

He gestured across an unassuming but important UT facility just off Alcoa Highway tucked within the East Tennessee AgResearch and Education Center that will be the main base for a historic tree-grafting effort that will commence this winter. 

The goal: Create trees with high-quality genetic traits ranging from wildlife and habitat qualities to timber value.

Heavy traffic hissed down the nearby highway as it passed by the modest understock yard, greenhouse, raised beds and small house containing offices used as the main grafting facility for the UT Tree Improvement Program (TIP). At least 50,000 vehicles pass by the site every day but most drivers and passengers are oblivious to the existence of this small but important outpost of forest conservation skirted by a Knox County greenway.

The Tree Improvement Program was first established in 1959. It survives as a notable exception to the cost-cutting of such projects in other states at both university and government levels.

“These days we tend to look only at the short term. UT did not.”

Beginning in January, Schlarbaum, director of the program since 1983, will oversee grafting efforts on some 3,600 trees. Last year, during which TIP efforts were disrupted by the Covid-19 pandemic, about 2,000 trees were grafted.

“We are gearing up for our biggest grafting year ever. That’s a huge deal,” Schlarbaum said.

NYT: Arizona farmers first affected but more cuts likely in future

The Bureau of Reclamation declared a water shortage Monday in Lake Mead, a huge reservoir below Hoover Dam that lies along the Colorado River, a historical, natural and national landmark and economic engine that ultimately provides water to seven Western states.

It was the first such dire Level 1 declaration since construction of the reservoir, the largest in the Colorado River impoundment system, in the 1930s. The surface of Lake Mead is projected to soon reach about 1,000 feet above sea level; it's only at about 35 percent capacity, the New York Times reported. Lake Powell in Utah is also at historically low levels.

In an example of drought affecting areas beyond the Colorado basin, a California reservoir, Lake Oroville, near the site of the huge and destructive Dixie Fire, recently dropped below levels suitable for pumping water.

Arizona stands to lose 20 percent of its allotment of river water because of the federal restrictions. Many farmers and others have said they will have to drill for groundwater, itself a resource of concern.

The river provides water to 40 million people in seven states across the West from Wyoming to Mexico, which has a say in how the water is distributed before it reaches the border. Increasingly low-level flows are due to reduced runoff from sparse rainfall and snow packs reduced by worsening drought linked to climate change.

An Audubon Society representative on the board that governs the distribution of the river water foresees more cuts, some of which are predicated on protections of natural habitat and wildlife. “Once we’re on that train, it’s not clear where it stops," she told the Times.

The Revelator: Residual drugs largely unfiltered by existing wastewater plants

Aquatic species around the world are exposed to at least 600 types of residual drugs, ranging from anti-inflammatories to antidepressants, and it’s not fully understood how these chemicals will ultimately affect marine ecosystems.

Some research indicates that a species of crayfish is emboldened by antidepressant compounds in the presence of predators, lessening its flight response. Scientists have also noted the presence of pharmaceuticals among invertebrates, as well as seaweed.

More work is needed to further document the effects of the chemicals on the behavior and reproduction of aquatic life, but people can temper the introduction of pharmaceuticals in the first place by never flushing medications down the toilet or any other drain, and checking in on the filter technologies in place at their local wastewater treatment plant. Some advanced carbon filters can successfully remove pharmaceuticals from wastewater before it’s released into the environment.

Coal miners who contracted black lung disease are at risk of losing their healthcare options as mining companies wind down operations.

Join Appalachian Voices for an online overview of the disease, testimony from the afflicted and potential cures for this blemish on public health.

From Appalachian Voices:

“Rates of black lung are at their highest level in decades, and a wave of bankruptcies have enabled some coal companies to quit paying for healthcare and disability benefits for miners with the disease.

“This means that more and more miners must rely on the federal Black Lung Disability Trust Fund to provide these critical resources. But the small tax coal companies pay to finance the trust fund is in jeopardy. Industry lobbyists and some in Congress want to give coal companies a tax break at the expense of miners, even though the trust fund is already billions of dollars in the red.

“This webinar, at 6 p.m. Aug. 11, will feature a panel of coal miners and other advocates discussing the impacts of black lung disease, the policies that are needed to address this public health crisis, and what you can do to support the miner-led grassroots movement for black lung benefits and healthcare.”

Sign up for the black lung webinar.

News Sentinel: Toxic ash fill at Claxton ball field uncapped and unsealed

Tennessee Valley Authority used a mix of coal ash and dirt for fill during construction of a playing field that was later leased to Anderson County and the local Optimist Club for public use, reported Jamie Satterfield of the Knoxville News Sentinel.

She had earlier reported an adjacent playground was contaminated by coal ash byproducts, including heavy metals and multiple other toxins. The contaminants likely originated from coal-ash piles at the nearby Bull Run Fossil Plant. 

Anderson County and the Claxton Optimist Club operate the playground and sports fields, which are still owned by TVA.

The playground was built about 20 years ago, during which time coal ash disposal was lightly regulated. The disposal of coal ash from facilities such as Bull Run coal plant, which will be closed by 2023, has proven a major environmental problem and challenge for utilities across the country.

Memphis residents have pushed back against the Byhalia Pipeline project. The proposed pipeline has been the subject of controversy since 2019. The joint venture project would build a 49-mile pipeline between Memphis and Mississippi and would run through several Black communities in Memphis. VALERO Memphis Refinery, shown here, is along the Mississippi River’s Lake McKellar in South Memphis. Photo by Karen Pulfer Focht

Opponents of Memphis pipeline cite textbook examples of environmental racism

(This story was originally published by Tennessee Lookout).

Memphis City Council passed an ordinance this month protecting the Memphis Sand Aquifer after environmental activists spent nearly a year fighting to protect it against a crude-oil pipeline.

The city council passed on second reading an ordinance establishing the city government’s role in  overseeing future developments in Memphis and how they may impact the aquifer, which serves as the area’s main drinking water supply. 

The ordinance will be up for a third and final vote on Aug. 17.

Since 2019, environmental and racial justice advocates have protested plans to build the Byhalia Pipeline, a joint venture between Texas-based Plains All American Pipeline and Valero Energy Corporation, in a historically Black neighborhood located in Southwest Memphis. What started as criticisms turned into full-blown protests that gathered national attention and support from prominent political figures, including former Vice President Al Gore and civil rights leader the Rev. William Barber.

The council used the Federal and Tennessee Safe Drinking Water Act as an authorizing agent for local government’s ability to protect public drinking water.

The Memphis City Council first discussed legislation to protect the aquifer in May 2021 and introduced ordinances that would affect the Byhalia Pipeline. 

The resolution established an Underground Infrastructure Advisory Board to review all future developments within Memphis and prohibit those that carried hazardous liquids. According to council documents, developments must not pass within 1,000 feet of the Wellhead Protection Areas, which access existing public water supplies. 

Byhalia Pipeline representatives threatened to file a lawsuit against the city council if they were to pass legislation that regulated future developments, causing the council to delay the vote. 

Byhalia Pipeline representatives then abandoned the project in July but said they still considered filing a lawsuit if the resolution were to pass. 

Councilman Jeff Warren, who sponsored the resolution, said “lawsuits are always possible.”

Local community leaders and critics called the Byhalia Pipeline an example of environmental racism, adding that Memphis communities were already burdened by harmful environmental issues caused by nearby oil refineries, wastewater treatment facilities, industrial manufacturers and power plants.

These factors led to cancer risks four-times the national average, and any contamination of the area’s drinking water could potentially turn the area into another Flint, Michigan, a city whose water system was contaminated with lead.

Washington Post: Carbon dioxide levels at highest point in 2 million years

A United Nations climate report authored by 34 people mining 14,000 scientific studies concludes that substantial climate change and its effects are now largely unavoidable but nations, municipalities and individuals can still take steps to minimize the consequences as much as possible.

Here are some key points from the Intergovernmental Panel on Climate Change report:

— Human-caused global climate change is an irrefutable fact. Now the debate is what we do about it.

— Few if any signatories to the 2015 Paris Climate Accord met their pledged reduction targets.

— At current emissions rates, the Earth will have heated to or beyond 2.7 degrees (F) above pre-industrial levels by the 2030s.

— Hurricanes, cyclones, droughts, heat waves and other weather anomalies will worsen.

The report comes as many present disasters linked to global warming unfold around the world. The second-largest wildfire in California history burned in the drought-stricken state; Greece dealt with historic wildfires; and Germany and the European Lowcountry reeled from an unprecedented rainstorm that destroyed entire towns and killed more than 200 people. Another heat wave is supposed to arrive in the Pacific Northwest this week.

NYT: Database allows you to track the local increase in 90-degree days every summer since your birthday

If you were born in Knoxville in 1970, it got hot in the summer, sure. But you and your parents could expect temperatures to exceed 90 degrees only about 37 days a year, generally at the height of summer, according to an interactive database from Climate Impact Lab.

But if you were born in 1985, there were an average 44 days per year when the temperature rose above 90 degrees. Now there are about 63 such days each year in Knoxville. I think you can see the pattern here. 

To use the climate-change database, simply key in your birthdate (it goes back to 1960) and locality and you will see how summer temperatures (as measured by the number of daily high temperatures at or above 90 degrees) have steadily tracked upward over the course of your lifetime.

(If you have any doubt as to how this affects you, check your utility bill).

Compass: TPO mapping will hasten safety fixes

A map compiled by the Knoxville Regional Transportation Planning Organization denotes the most dangerous intersections, streets and roads in the Knoxville region.

Transportation planner Ellen Zavisca crunched crash and related injury data to highlight the most dangerous roadway stretches in the region over 3.5 years, according to Compass.

The database will be updated with real-time data, and will allow a quantified approach to prioritizing safety improvements in the planning region. 

“One of the things that stands out is the major arterial roads tend to see more of these (serious accidents) even than the interstates,” Zavisca said, referring to commercial corridors like Chapman Highway, Clinton Highway and Kingston Pike," Compass reported.

“Because those are the roads that have this, unfortunately, really unsafe combination of high speeds, high volumes, and just a lot of access points,” Compass reported.

“(The) ... map shows the location of 2,326 traffic crashes in the Knoxville region that resulted in a fatality or serious injury between January 2016 and June 2019,” according to the TPO website. 

“There were 321 crashes involving a fatality, and 2,005 serious-injury crashes.

“Every 13 hours in our region, someone experiences a fatal or life-altering traffic crash,” according to TPO.

WATE: Greg LeMond will manufacture and sell bicycles in Knoxville

Three-time Tour de France winner Greg LeMond christened a new bike shop in Knoxville this week accompanied by Lt. Gov. Randy McNally and Knoxville Mayor Indya Kincannon. 

LeMond has been researching and integrating carbon fibers into his bikes for a few years, but the Knoxville shop will sell electric bikes along with other bicycle styles.

“LeMond moved to Knoxville in 2016 and has a goal to build and sell bikes in the city and by the end of 2022, he plans to be making all of his bikes in East Tennessee,” WATE reported.

“The store is selling a range of bikes including road bikes, mountain bikes and electronic bikes. LeMond also stated that Tennessee has some of the best bike riding in the country.”

The store is on Deermont Lane in Knoxville.