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<p>University of Colorado at Boulder undergraduates, who have been helping to control five NASA satellites from campus, participated in the unusual decommissioning of a functioning satellite with a failed science payload in recent days, bringing the craft into Earth re-entry to burn up yesterday.</p>

<p>Large changes in the sun's energy output may drive unexpectedly dramatic fluctuations in Earth's outer atmosphere, new research indicates. A study published today links a recent, temporary shrinking of a high atmospheric layer with a sharp drop in the sun's ultraviolet radiation levels.</p>

<p>Postdoctoral fellows and graduate students from Professor Mark Hernandez's environmental engineering lab at the University of Colorado at Boulder will travel to the Gulf Coast this week to begin studying the effect of this summer's oil spill on air quality along impacted shores.</p>

<p>DENVER—University of Colorado campuses and undergraduate programs remain well-regarded at the regional and national levels among public and private universities, according to the 2011 edition of U.S. News & World Report's Best Colleges.</p>

<p>A planned $110 million telescope in Chile that the University of Colorado at Boulder is partnering on to probe distant galaxies and stellar nurseries has been named as the top construction priority for mid-sized, ground-based telescopes by the National Research Council in the coming decade.</p>

<p>A thick blanket of yellow haze hovering over Houston as a result of chemical pollution produced by manufacturing petroleum products may be getting a little bit thinner, according to a new study.</p>

<p>The University of Colorado at Boulder and the U.S. Department of Energy's National Renewable Energy Laboratory in Golden today named Michael L. Knotek as director of the Renewable and Sustainable Energy Institute, or RASEI.</p>

<p>CU Scientists Secure More Than $847 Million in Sponsored Research Funding in FY 2009-10</p>

<p>A joint renewable energy center of the University of Colorado at Boulder, Colorado State University, Colorado School of Mines, the U.S. Department of Energy's National Renewable Energy Laboratory and industry has been awarded $336,534 from the National Science Foundation so that undergraduates can conduct research related to the conversion of biomass to fuels and chemicals.</p>

<p>An international science team involving the University of Colorado at Boulder that is working on the North Greenland Eemian Ice Drilling project hit bedrock July 27 after two summers of work, drilling down more than 1.5 miles in an effort to help assess the risks of abrupt future climate change on Earth.</p>