
Jen Schaefer
Professor in the Nuclear Science and Engineering Program at the Colorado School of Mines and former ARPA-E director and researcher at PNNL and the Department of Energy, specializing in nuclear fuel cycle and waste management.
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Mar 26, 2026 • 34min
The state and future of nuclear waste
Dr. Jen Schaefer, a nuclear fuel-cycle expert and professor at Colorado School of Mines, breaks down what spent fuel is and which isotopes drive long-term risk. She walks through storage methods from pools to dry casks. The conversation covers Yucca Mountain, recycling versus disposal, how advanced reactor fuels change the problem, and novel take-back ideas for microreactors.


