Todd Luxton is a Chemist with the Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory in Cincinnati, OH. Todd received his undergraduate degree in Soil Science from Penn State and his Masters and Ph.D. in Soil Chemistry at Virginia Tech. Todd has been with the EPA since 2007. He was brought in as a Post-Doctoral Fellow and was hired permanently in 2010. Todd's research is mainly focused on the impact of anthropogenic contaminants (chemical and nanomaterial) and activities on natural and engineered environments. His focus is on linking the interaction between anthropogenic and natural constituents in landscape processes at the atomic and molecular level. Most of Todd's research employs the use of spectroscopic techniques for elucidating molecular and atomic level interactions, specifically the use of high-energy synchrotron radiation for X-ray near edge and extended X-ray absorption spectroscopy, Fourier Transformed Infrared Spectroscopy, and X-Ray Photoelectron Spectroscopy. Active areas of research include: 1) transformation and fate of engineered nanomaterials, 2) impacts reservoir management on mercury cycling and formation of methyl-mercury, 3) use of metal stable isotopes for contaminant source identification and fate/transformation of contaminants, 4) beneficial reuse of industrial waste by-products for remediation efforts, and 5) metal immobilization in contaminated soils through soil amendments.