Tullis Onstott
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Tullis Onstott (January 12, 1955 – October 19, 2021) was a professor of geosciences at Princeton University who has done research into endolithic life deep under the Earth's surface. In 2011 he co-discovered Halicephalobus mephisto, a nematode worm living Script error: No such module "convert". under the ground,[1] the deepest multicellular organism known to science. He won a LExEN Award for his work "A Window Into the Extreme Environment of Deep Subsurface Microbial Communities: Witwatersrand Deep Microbiology Project".[2] In 2007, Onstott was listed among Time Magazine's 100 most influential people in the world.[3]
Life and education
Onstott attended the California Institute of Technology and was awarded a B.S. in Geophysics in 1976. He later moved to Princeton University to earn a M.A. in 1978 and later a Ph.D. in 1980, both in Geology, under the direction of Robert B. Hargraves.[4] After receiving his doctoral degree, Onstott, spent the next three years as a postdoctoral fellow in Derek York's laboratory at the University of Toronto performing research involving 40Ar/39Ar geochronology, before returning to Princeton as a professor.[5] Onstott died October 19, 2021, after a long illness.[6]
Research
Research projects include:[7]
- South African Deep Microbiology: characterizing the microbiology and geochemistry of continental crust down to Script error: No such module "convert"..[8]
- Indiana-Princeton-Tennessee Astrobiology Institute: preparing for the search for life beneath the surface of Mars.
- Natural Earthquake Laboratory in South African Mines: installed a field laboratory at Script error: No such module "convert". depth, exploring the relationship between seismic activity and microbial diversity and activity.
- Anaerobic biostimulation for the in situ precipitation and long-term sequestration of metal sulphides.
The first two research projects were done in collaboration with stable isotope biogeochemist and colleague Lisa Pratt of Indiana University.[9]
His work on these projects and others is detailed in his book Deep Life: The Hunt for the Hidden Biology of Earth, Mars, and Beyond published by Princeton University Press in 2016.[10]
References
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