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U.S. Sen. Bill Hagerty, R-Tenn.; U.S. Secretary of Energy Chris Wright; Rep. Chuck Fleischmann; R-Chattanooga; and Open AI CEO Greg Brockman spoke with the press during a tour of Oak Ridge-area nuclear facilities.  Ben Pounds/Hellbender Press

Visit by energy secretary doesn’t address program cuts as former fracking CEO downplays climate change threat; visit comes following diversity program cuts; full extent of Oak Ridge impacts still unknown

Hellbender Press typically avoids the use of anonymous sources. The sources in this story spoke on condition they not be identified so they could speak on a sensitive matter.

This story will be updated. The original stories continue below.

OAK RIDGE — U.S. Secretary of Energy Chris Wright denied that climate change was a “crisis” and downplayed its threat during a visit to an international hub of scientific expertise rattled by early actions of the second Trump Administration. His visit did little to allay fears of cuts to staff and programs at Oak Ridge National Laboratory, where the most concrete signs of change have been the dismantling of diversity efforts.

Wright visited ORNL on Feb. 28, and at a press conference defended the Trump administration’s actions on climate change, energy sources and the Department of Government Efficiency (DOGE), a group headed by Elon Musk that has recommended cutting programs and staff in various government departments.

He did not announce any layoffs at the lab itself, however, and implied research related to climate there will continue. Oak Ridge National Laboratory is home to many kinds of related research, including at the Climate Change Science Institute. CCSI does modeling and gathers data on the climate, as well as working on solutions to the problem.

Wright promoted research on artificial intelligence, which he called “Manhattan Project II,” and nuclear energy, and he appeared alongside Sen. Bill Hagerty, R-Tenn., Rep. Chuck Fleischmann R-Chattanooga and Open AI CEO Greg Brockman, who also spoke and answered questions. 

“I don’t think you’ll see any reduction in the science that we do regarding climate change or any of these other really big questions,” said Wright in response to a reporter’s questions about how cuts at the lab might affect climate change-related research at ORNL, which his department funds through a partnership with contractor Battelle and the University of Tennessee. He said, however, he still “100 percent” believed there was no climate “crisis” and said scientific reports backed up his view. 

“We haven’t seen an increase in the frequency or intensity of hurricanes, floods, droughts, storms. Wildfires are on an uptick because we stopped managing our forests,” he said. “Deaths from extreme weather, which is what you hear the press and politicians’ fearmongering about, it declined over 90 percent in my lifetime as the population’s grown. So climate change is a real phenomenon. It’s just not even remotely close to the world’s biggest problem.” He also said an intergovernmental climate change report also showed economists saying climate change was not as important as issues like education, free trade and “empowerment.”

These claims are a mixed bag of truth. While the frequency of hurricanes hitting the United States, for example, hasn’t increased, a recent Columbia University study showed the tropical cyclones’ intensity for the East and Gulf Coasts has. Also unmentioned by Wright was any impact the climate has on disease or health conditions apart from extreme weather, a subject on which experts at Tennessee’s own Vanderbilt University have sounded the alarm.

Wright was CEO of a hydraulic fracking company, Liberty Energy, before his appointment.

“It’s a real thing, but nothing in the science of climate change or in the economics of climate change shows it to be the world’s biggest problem,” Wright said. “When you call something a crisis, it means we don’t have time to stop and think. We’ve just got to take action. That’s exactly the opposite of what climate science is.”

During the meeting, he also defended Musk, DOGE and Trump’s actions generally while not announcing any such cuts for the civilian research at Oak Ridge National Laboratory or the weapons maintenance at Y-12, which is managed by a different contractor. A reporter at the event mentioned an earlier instance in which workers at Y-12 National Security Complex received termination letters that were then rescinded. While the reporter asked him to offer reassurance on job security, he sidestepped that question.

Oak Ridge National Laboratory collaborated with commercial utility EPB and the University of Tennessee Chattanooga to develop and test the first transmission of an entangled quantum signal using multiple wavelength channels and automatic polarization stabilization over a commercial network with no downtime.  Morgan Manning/ORNL, U.S. Dept. of Energy

OAK RIDGE — Researchers at the Department of Energy’s Oak Ridge National Laboratory joined forces with EPB of Chattanooga and the University of Tennessee at Chattanooga to demonstrate the first transmission of an entangled quantum signal using multiple wavelength channels and automatic polarization stabilization over a commercial network with no downtime.

The successful trial of this innovation marks another step toward the eventual creation of a quantum internet that could prove to be more capable and secure than existing networks.

Quantum computing relies on quantum bits, or qubits, to store information. Qubits, unlike the binary bits used in classical computing, can exist in more than one state simultaneously via quantum superposition, which allows combinations of physical values to be encoded on a single object.

The demonstration used automatic polarization compensation, or APC, to stabilize the polarization, or direction of the electric field oscillation in a light wave, of a signal sent over the EPB’s fiber-optic commercial quantum network. The approach used reference signals generated by lasers to continuously check the transmitted polarization, detected with an ultrasensitive method known as heterodyne detection.

APCs reduce data interference caused by outside forces like wind and temperature changes that can affect the fiber optic cables used to transmit quantum signals.

“One of our goals all along has been to develop quantum communications systems that operate seamlessly for users,” said Joseph Chapman, an ORNL quantum research scientist who led the study. “This is the first demonstration of this method, which enabled relatively fast stabilization while preserving the quantum signals, all with 100 percent uptime — meaning the people at either end of this transmission won’t notice any interruption in the signal and don’t need to coordinate scheduled downtime.”

The method enabled continuous transmission of the signals with no interruptions for more than 30 hours between the node on the University of Tennessee Chattanooga campus and two other EPB quantum network nodes, each about half a mile away. The UTC node held an entangled-photon source developed by Muneer Alshowkan, an ORNL quantum research scientist.

The quantum network technology using automatic polarization compensation developed by ORNL was demonstrated in Chattanooga, Tennessee. The test utilized EPB’s fiber-optic commercial quantum network and involved the University of Tennessee Chattanooga and industry partner Qubitekk.  Joe Chapman, Morgan Manning/ORNL, U.S. Dept. of Energy

ORNL researchers are using artificial intelligence to speed the identification of environmentally friendly solvents for industrial applications.  Andy Sproles/ORNL, U.S. Department of Energy

OAK RIDGE — Oak Ridge National Laboratory scientists developed a method leveraging artificial intelligence to accelerate the identification of environmentally friendly solvents for industrial carbon capture, biomass processing, rechargeable batteries and other applications.

The research targets a class of solvents known for being nontoxic, biodegradable, highly stable, cost-effective and reusable. 

The scientists developed a method to predict solvent viscosity — a key property impacting performance for industrial applications. They compiled nearly 5,000 data points on 672 solvents, evaluated quantum chemical features that guide solvent molecular interactions, and deployed an algorithm called categorical boosting to quickly parse the data and determine the best candidates.

“We reduced computational time and complexity with our approach, while still incorporating all possible molecular interactions,” said ORNL’s Mohan Mood.

ORNL’s Michelle Kidder said, “Interpretable machine learning helps us to design solvents with desired properties for carbon capture by reducing experimental time and cost in the laboratory.”

A 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