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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Jennifer Glass 
Frank Stewart Somewhere in Artist Heaven, the man who gave us "Purple Rain" is smiling. The Purple Earth hypothesis suggests that the single-celled organisms that ruled the planet during its early years may have lent Earth a purple tinge if seen from space. Researchers are now wondering if the theory could help determine the potential for life on recently discovered exoplanets. Jennifer Glass, assistant professor in the School of Earth and Atmospheric Sciences, and Frank Stewart, associate professor in the School of Biological Sciences, react to the hypothesis in this latest installment of CNN's Colorscope series.
