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<p>A research team led by the University of Colorado at Boulder has discovered a previously unknown cellular "switch" that may provide researchers with a new means of triggering programmed cell death, findings with implications for treating cancer.</p>

<p>A new scientific study packs a double surprise about the chemistry happening in the air around us. Chlorine, a chemical usually kicked into the atmosphere by sea spray, is more abundant than expected in air far from any coastline, and looks to be interacting with manmade pollution at night in ways that might affect air quality and climate.</p>

<p>The University of Colorado at Boulder will host a topping-out ceremony March 12 at 10 a.m. to celebrate placement of the last steel beam for the Institute of Behavioral Science building, which is under construction on the corner of Grandview Avenue and 15th Street.</p>

<p>University of Colorado at Boulder alumna Jane Butcher, who with her late husband Charlie Butcher has played a key role in supporting CU-Boulder's rapidly expanding biotechnology research efforts, has pledged $1 million toward the Jennie Smoly Caruthers Biotechnology Building being built on the university's East Campus.</p>

<p>A tiny communications satellite designed and built by University of Colorado at Boulder undergraduates has been selected as one of three university research satellites to be launched into orbit in November as part of a NASA space education initiative.</p>

<p>A new approach to social media called "Tweak the Tweet," conceived of by University of Colorado at Boulder graduate student Kate Starbird and being deployed by members of CU's Project EPIC research group and colleagues around the nation, is helping Haiti relief efforts by providing standardized syntax for Twitter communications.</p>

<p>The University of Colorado at Boulder has been awarded $840,000 from the National Science Foundation for students to build a tiny spacecraft to observe energetic particles in space that should give scientists a better understanding of solar flares and their interaction with Earth's atmosphere.</p>

<p>University of Colorado alumnus-astronaut Jim Voss has become the second astronaut to join CU-Boulder's aerospace engineering sciences department following his NASA career, which for Voss included five spaceflights, 202 days in space and four spacewalks.</p>

<p>Nobel laureate Tom Cech is returning to the University of Colorado full time this month after a 10-year stint as president of the Howard Hughes Medical Institute, a nonprofit medical research organization headquartered in Chevy Chase, Md., and one of the nation's largest philanthropies.</p>

<p>Across the University of Colorado at Boulder campus students are sharing answers, checking their responses to questions against those of their neighbors and making adjustments to those answers in hopes of earning a better grade.</p>