Tullis onstott biography of donald

American geologist — Carlsbad, New MexicoU. Oracle, ArizonaU. Life and education [ edit ]. Research [ edit ]. References [ edit ]. Princeton University. Bibcode : Natur. PMID S2CID October 15, National Aeronautics and Space Administration. We collected 40 ice cores from the island. A lot of groups are doing similar studies across the Arctic. The more I learn, the more it seems that the requirements for life are pretty minimal.

The niches that life can occupy never cease to amaze me. While Onstott searches for microbes in gold mines and permafrost, other researchers are seeking out life in other deep locations. These bacteria support complex ecosystems in dark, otherwise sparsely populated ocean depths. Earlier this year, geomicrobiologist Katrina Edwards of the University of Southern California and her colleagues drilled into the crust of the Atlantic Ocean and installed small subsurface observatories to monitor microbial life.

In scientists from Oregon State and other institutions drilled into the gabbroic layer—the deepest layer of the oceanic crust, close to the hot, mineral-rich mantle—to find a host of bacterial species capable of gobbling up hydrocarbons from an unknown source. The only species Onstott has observed in action are nematode worms; he could see them squirming under a microscope, and took detailed electron microscopy images of their hundredth-of-an-inch-long bodies.

Tullis onstott biography of donald

He also found cells of D. Onstott imaged what he could of those cells with a transmission electron microscope. But he has never been able to see any bacteria moving around, or grow them in the lab. Instead, the vast majority of what he studies is DNA traces. In other cases he has found bits of free-floating genetic material from other species—just enough, he says, to show that each one exists deep in the mines and is largely specific to the fracture in which it was found.

Register or Log In. The Magazine. Login Register Stay Curious Subscribe. By Valerie Ross. Onstott keeps a sealed workspace in his lab at high temperature and free of oxygen—just like home for the bacteria he studies. Photo: Jess Dittmar. Newsletter Sign up for our email newsletter for the latest science news. Sign Up. Tullis Onstott has to put on a headlamp and protective gear when excavating microbial live in some of South Africa's deepest mines.

Photo by Jess Dittmar. Already a subscriber? Want more? More From Discover. Stay Curious. We don't know for a fact whether Tullis Onstott is gay, bisexual or straight. However, feel free to tell us what you think! Vote by clicking below. Are there any photos of Tullis Onstott's hairstyle or shirtless? There might be. But unfortunately we currently cannot access them from our system.

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