The latest ominous number to appear on the side of a New York building is a real-time count of the tons of carbon dioxide (and equivalents of other greenhouse gases) emitted each day, based on MIT calculations. The 70-foot-tall display, unveiled last week by Deutsche Bank outside New York's Madison Square Garden, is modeled after the familiar Times Square Debt Clock. The new display's rapidly rising red digits are based on data collected and analyzed by MIT's Science and Policy of Global Change. (source: web.mit.edu)
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