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MIT postdoc Leila Mirzagholi is working to understand the effects of environmental changes on global vegetation. Her latest paper shows how global warming effects the timing of autumn leaf senescence.

Without Prochlorococcus in the open ocean sequestering huge amounts of carbon, “we would be looking at a very different planet,” Rogier Braakman says. New research suggests the microbe’s ancient coastal ancestors colonized the ocean by rafting out on chitin particles.

Ali Jadbabaie and Robert van der Hilst describe MIT's new undergraduate degree in climate system science and engineering.