Harvard astronomers find 'mega-Earth'.
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Led by Peter Girguis, the John L. Loeb Associate Professor of the Natural Sciences, and Arpita Bose, a postdoctoral fellow in organismic and evolutionary biology, a team of researchers has demonstrated that the bacterium Rhodopseudomonas palustris can use natural conductivity to pull electrons from minerals located deep in soil and sediment while remaining at the surface, where it absorbs the sunlight needed to produce energy.
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Led by David Liu, a professor of chemistry and chemical biology and a Howard Hughes Medical Institute investigator, a team of Harvard researchers recently developed the first system for enabling proteins to evolve continuously in the laboratory, without researcher intervention. That system, called PACE (phage-assisted continuous evolution), allowed for protein evolution to take place approximately 100 times faster than previously possible.

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Sarah Rugheimer, graduate student in the Department of Astronomy, and member of the Origins community, has been selected as one of eight Harvard Horizon Scholars for 2014. Read more.
Watch Sarah's five-minute symposium talk.