The secret to longevity in tubeworms
...how it obtains sufficient nutrient in the form of sulfide - to keep going for this long has been a mystery. ...obes, and ensures its own long-term survival. The sulfide this worm needs is created by a consortium of bacteria and archaea that live in the deep sea cold se...Novel sulfide-binding mechanism found in deep-sea tubeworms
...and cold seeps in the world's oceans must adapt to sulfide levels that would prove lethal to most aquatic life while simultaneously providing hydrogen sulfide molecules to symbiotic bacteria within their bodies. A Penn State research team, in collaboration w...Family trees of ancient bacteria reveal evolutionary moves
...hermophily (love of heat), motility and the use of sulfide as an electron donor. "We will need lots of analyses of the micro-fossil record by serious paleobiologists to see how sound this hypothesis is," Blank said. "This time frame is one of the biggest puzzles for biologists and geologists alike. A huge ...Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
...ed the principle source of energy. "You can smell sulfide in the air at Yellowstone, and the accepted idea was that sulfur was the energy source for life in the hot springs," Spear said. Not so, according to the team's computer models built on field measurements of hydrogen, sulfide, dissolved oxygen conce...Sardines may prevent toxic gas eruptions off the California and African coasts
...thane and poisonous "rotten egg" smelling hydrogen sulfide gas. As methane is 21 times more effective than carbon dioxide at trapping heat in the atmosphere, the resulting climate change may intensify this upwelling process and the possibility of even larger and more plentiful eruptions. One key tha...Stanford environmental molecular science institute will study pollutants, one molecule at a time
...adily absorbed in human tissue, but solid mercuric sulfide is highly insoluble and does not pose as much of an environmental hazard,'' Brown said. ''We'll also be training graduate and undergraduate students to work on these complex problems, and we'll have outreach to K-12 students as well.'' Bryan Brown, a...Munching microbes could cleanse arsenic-contaminated groundwater
...l consume sulfate and reduce it into sulfide. The sulfide then reacts to precipitate arsenic, leaving little in solution. If the sulfate-reducing bacteria run out of sulfate, methanogenic bacteria take over as the dominant metabolic force, Kirk said. Because methanogenic bacteria don't produce sulfide, the...Component of volcanic gas may have played a significant role in the origins of life on Earth
...lcanic gas known as carbonyl sulfide. Carbonyl sulfide is present in volcanic gasses and deep sea vent emissions today, and since these geological phenomena were prominent features on the early Earth, it is reasonable to assume that the gas was present. In their report, the scientists demonstrate tha...