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NASA-funded robotic sub finds bottom of world's deepest sinkhole
A robotic vehicle designed for underwater exploration plunged repeatedly into the depths of Mexico's mysterious El Zacaton sinkhole in late May, finding its previously undiscovered bottom 318 meters below the surface and generating a sonar map of its inner dimensions. View News Article (2007-06-01)

NASA mission explores world's deepest sinkhole
A NASA-funded expedition, including researchers from Carnegie Mellon University's Robotics Institute, will begin searching for the submerged bottom of Mexico's El Zacatón sinkhole with a robotic submarine the week of May 14. View News Article (2007-05-15)

Increase in severe poverty in the US has serious implications for public health
Since 2000, Americans have been getting poorer, and national rates of severe poverty have climbed sharply, according to a study published in the October issue of the American Journal of Preventive Medicine. View News Article (2006-08-29)

NASA's robotic sub readies for dive into Earth's deepest sinkhole
An underwater robot, shaped like a flattened orange, maneuvered untethered and autonomously within a 115-meter-deep sinkhole during tests this month in Mexico, a prelude to its mission to probe the mysterious nether reaches of the world's deepest sinkhole. View News Article (2007-03-01)

NASA-funded Robotic Sub Makes Final Dive To Reach Bottom of Earth's Deepest Sinkhole
Scientists this week begin the final leg of a five-year, NASA-funded mission to reach the bottom of Cenote Zacatón in Mexico, the world's deepest known sinkhole. View News Article (2007-05-16)

Prototype Space Probe Prepares To Explore Earth's Deepest Sinkhole
Scientists return this week to the world's deepest known sinkhole, Cenote Zacatón in Mexico, to resume tests of a NASA-funded robot called DEPTHX, designed to survey and explore for life in one of Earth's most extreme regions and potentially in outer space. View News Article (2007-03-08)

Great Lake's sinkholes host exotic ecosystems
Researchers are exploring extreme conditions for life in a place not known for extremes. As little as 20 meters (66 feet) below the surface of Lake Huron, the third largest of North America's Great Lakes, peculiar geological formations-sinkholes made by water dissolving parts of an ancient underlying seabed-harbor bizarre ecosystems where the fish typical of the huge freshwater lake are rarely to... View News Article (2009-02-25)

Fossils excavated from Bahamian blue hole may give clues of early life
Long before tourists arrived in the Bahamas, ancient visitors took up residence in this archipelago off Florida's coast and left remains offering stark evidence that the arrival of humans can permanently change -- and eliminate -- life on what had been isolated islands, says a University of Florida researcher. View News Article (2007-12-04)

Naturally occurring methane found in groundwater in New York
Since hydraulic fracturing operations began in the Marcellus Shale region, debate has raged over whether drilling operations are causing high levels of methane in drinking-water wells.  View News Article (2014-05-08)

Rosetta spacecraft sees sinkholes on comet
The European Space Agency's Rosetta spacecraft first began orbiting comet 67P/Churyumov-Gerasimenko in August 2014.  View News Article (2015-07-02)

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