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![Mars Rover 2020](/sites/default/files/styles/list_page_thumbnail/public/2019-03/Mars.jpg?h=c44fcfa1&itok=t7nw4dMf)
NASA uses the isotope plutonium-238 to power its space explorations. The car-sized Mars 2020 rover will contain plutonium produced at ORNL.
![Mike Zach](/sites/default/files/styles/list_page_thumbnail/public/2019-03/Zach_0.jpg?h=57024e64&itok=JGtc3ilO)
![Julie Ezold](/sites/default/files/styles/list_page_thumbnail/public/2019-03/ezold%20030819_0.jpg?h=8f0b2d98&itok=-JcgGgP3)
ORNL is a major source of isotopes, providing more than 300 for use in medicine, research, industry and space exploration.
![Frances Arnold Frances Arnold](/sites/default/files/styles/list_page_thumbnail/public/Screen%20Shot%202016-10-24%20at%2010.25.35%20AM.png?itok=KHtBgBg_)
Caltech chemical engineer Frances Arnold delivered the Eugene P. Wigner Distinguished Lecture in Science, Technology, and Policy at ORNL on Nov. 2, 2015.
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![ORNL Image](/sites/default/files/styles/list_page_thumbnail/public/Screen%20Shot%202016-10-20%20at%208.24.43%20AM.png?itok=rueRM3bi)
ORNL’s Molten Salt Reactor Experiment operated more than 13,000 hours during its four-year run in the mid- to late 1960s. A priority of long-serving lab director Alvin Weinberg, MSRE was noteworthy at least in part because it ran on fuel that circulated through the reactor rather than staying put in...
![ORNL Image](/sites/default/files/styles/list_page_thumbnail/public/Omar%20thumb.jpg?itok=oEPQ_D45)
A global agreement to phase down the use of potent greenhouse gas refrigerants and replace them with climate-friendly alternatives leaned on multiple ORNL studies. In a landmark decision, climate leaders from more than 190 countries agreed to amend the Montreal Protocol to discontinue producing a...
![ORNL Image](/sites/default/files/styles/list_page_thumbnail/public/Screen%20Shot%202016-10-10%20at%203.19.38%20PM.png?itok=RFrCFYkZ)
Extreme pressure can lead to chemical compounds not found on Earth under normal conditions. Nobel Prize winner Roald Hoffmann discusses how they can give us valuable information.