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Henry S. Webber, executive vice chancellor for administration, discusses the $30 million dollar sustainability commitment Washington University is making as part of its Clinton Global Initiative University efforts. The ambitious plan involves returning the university to 1990 emissions levels despite a doubling in size of the campus and its Medical School.

How Spiral Galaxies Get Their Arms: The image below and video animation shows a simulation of arm formation in spiral galaxies. The simulation was performed by UW-Madison astrophysicist Elena D’Onghia, who led new research in the area along with Harvard-Smithsonian Center for Astrophysics colleagues Mark Vogelsberger and Lars Hernquist.