David E. Thomas (born 1953) is a scientist and software engineer best known for his scientific skepticism research and writings. He is a graduate of the New Mexico Institute of Mining and Technology, and his skeptic work covers the Roswell and Aztec UFO sightings, the Bible code, global warming, the 9/11 Truth movement and chemtrails. Thomas is frequently published in Skeptical Inquirer magazine. Thomas currently works at the Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) at New Mexico Tech and is an adjunct instructor of psychology and education there.