OurAmazingPlanet: A computer model of carbon dioxide in ice cracks has two MIT researchers speculating that the greenhouse gas could structurally weaken glaciers, which are already under pressure from global warming. Materials scientist Markus Buehler, a professor at MIT, studies the mechanical properties of fracturing in everything from spider silk to bones. He works on a nano-sized scale, looking at the bonds between molecules and atoms. Even an iceberg the size of Manhattan starts with a single broken bond,...
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