My current research aims to establish environmental resilience in nuclear energy to better prepare for, respond to, and recover from nuclear accidents and associated environmental contamination. Observations from nuclear contaminated sites – at more than 100 nuclear weapon-related sites in the US and in the Fukushima region – provide valuable insights into the mobility of radionuclides as well as validate model/monitoring performance. At the same time, I continue developing and improving environmental monitoring and modeling strategies for existing/potential contaminated sites or for general general earth science applications, using innovative sensor technologies, contaminant transport simulations and machine learning.