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<p>Bob Travis opens his mouth and says "aaaaaaaaah." His voice sounds normal to him. But his voice as heard on a video recording is slightly more than audible.</p>

<p>A new study shows the Arctic climate system may be more sensitive to greenhouse warming than previously thought, and that current levels of Earth's atmospheric carbon dioxide may be high enough to bring about significant, irreversible shifts in Arctic ecosystems.</p>

<p>To the untrained eye, University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß Research Associate Craig Lee's recent discovery of a 10,000-year-old wooden hunting weapon might look like a small branch that blew off a tree in a windstorm.</p>

<p>Two University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß scientists have received National Science Foundation Faculty Early Career Development, or CAREER awards.</p>

<p>A new study indicates different delivery methods of newborn babies has a big effect on the types of microbial communities they harbor as they emerge into the world, findings with potential implications for the heath of infants as they grow and develop.</p>

<p>Male fish are taking longer to be "feminized" by chemical contaminants that act as hormone disrupters in Colorado's ¶¶Òõ´«Ã½ÔÚÏß Creek following the upgrade of a wastewater treatment plant in ¶¶Òõ´«Ã½ÔÚÏß in 2008, according to a new study led by the University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß.</p>

<p>More than 50 K-12 educators and 15 community college students from Colorado and two other states are participating in teaching programs at the University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß this summer in order to take video game programming back to the classroom.</p>

<p>A vast ocean likely covered one-third of the surface of Mars some 3.5 billion years ago, according to a new study conducted by University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß scientists.</p>

<p>A new study shows a thick organic haze that enshrouded early Earth several billion years ago may have been similar to the haze now hovering above Saturn's largest moon, Titan, and would have protected primordial life on the planet from the damaging effects of ultraviolet radiation.</p>

<p>The ancestor of all hammerhead sharks probably appeared abruptly in Earth's oceans about 20 million years ago and was as big as some contemporary hammerheads, according to a new study led by the University of Colorado at ¶¶Òõ´«Ã½ÔÚÏß.</p>