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![ORNL welder Devin Johnson uses a new orbital welder to seal a hollow target in a glovebox in the lab’s Radiochemical Engineering Development Center. The new welder makes a clean seam on the metal target, eliminating the need for hand-finishing afterward. Credit: Carlos Jones/ORNL, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/2021-01/2021-P00359.jpg?h=8f9cfe54&itok=_g8_FpZZ)
A better way of welding targets for Oak Ridge National Laboratory’s plutonium-238 production has sped up the process and improved consistency and efficiency. This advancement will ultimately benefit the lab’s goal to make enough Pu-238 – the isotope that powers NASA’s deep space missions – to yield 1.5 kilograms of plutonium oxide annually by 2026.
![Brian Damiano](/sites/default/files/styles/list_page_thumbnail/public/2020-12/2016-P04442.jpg?h=49ab6177&itok=lPIC-H6L)
Brian Damiano, head of the Centrifuge Engineering and Fabrication Section, has been elected fellow of the American Society of Mechanical Engineers.
![Porter Bailey started and will end his 33-year career at ORNL in the same building: 7920 of the Radiochemical Engineering Development Center.](/sites/default/files/styles/list_page_thumbnail/public/2021-01/2020-P17836.jpg?h=4cdfc2d0&itok=2rFoZlS6)
Porter Bailey started and will end his 33-year career at ORNL in the same building: 7920 of the Radiochemical Engineering Development Center.
![asset management](/sites/default/files/styles/list_page_thumbnail/public/2023-05/Picture9.png?h=cf4f3851&itok=rVU02eNT)
East Tennessee occupies a special place in nuclear history. In 1943, the world’s first continuously operating reactor began operating on land that would become ORNL.
![Diverse evidence shows that plants and soil will likely capture and hold more carbon in response to increasing levels of carbon dioxide in the atmosphere, according to an analysis published by an international research team led by Oak Ridge National Laboratory.](/sites/default/files/styles/list_page_thumbnail/public/2020-12/Climate%20%E2%80%93%20Global%20change%20analyses.jpg?h=468b42ad&itok=lhTGb-s4)
![Sandra Davern performs cell based assays to evaluate cell death and DNA damage in response to radiation in order to gain a better understanding of how radioisotope nanoparticles affect the human body.](/sites/default/files/styles/list_page_thumbnail/public/2020-10/2020-P15712.jpg?h=036a71b7&itok=6cpxN4v2)
When Sandra Davern looks to the future, she sees individualized isotopes sent into the body with a specific target: cancer cells.
![Pine trees in the Tuolumne Valley of Yosemite National Park show the effects of drought and fire. Credit: Anthony Walker/Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/2020-06/fire%20regrowth_1.jpg?h=4521fff0&itok=eNEQ_Mih)
A multi-institutional research team found that changing environmental conditions are affecting forests around the globe, leading to increasing tree death and uncertainty about the ability of forests to recover.
![Misha Krassovski, a computer scientist at Oak Ridge National Laboratory, stands in front of the Polarstern, a 400-foot long German icebreaker. Krassovski lived aboard the Polarstern during the first leg of the MOSAiC mission, the largest polar expedition ever. Credit: Misha Krassovski/Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/2019-10/IMG_0851_large.jpg?h=0d27ee61&itok=SDcaxULh)
In the vast frozen whiteness of the central Arctic, the Polarstern, a German research vessel, has settled into the ice for a yearlong float.
![Heat impact map](/sites/default/files/2019-07/Winter_HDD_Change_ORNL.gif)
A detailed study by Oak Ridge National Laboratory estimated how much more—or less—energy United States residents might consume by 2050 relative to predicted shifts in seasonal weather patterns
![Plants in the warmest of several study areas at the SPRUCE experimental site remained green and functional up to six weeks longer than plants growing at ambient temperatures. Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy Plants in the warmest of several study areas at the SPRUCE experimental site remained green and functional up to six weeks longer than plants growing at ambient temperatures. Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy](/sites/default/files/styles/list_page_thumbnail/public/SPRUCE_for_Nature.jpg?itok=I3_XAiHF)
A futuristic experiment simulating warmer environmental conditions has shown that peatland vegetation responds to higher temperatures with an earlier and longer growth period.