Arctic thaw could cost $60 trillion

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Scientists look at a warming Arctic and see a shift from white to green, as tundra gives way to new plant life.http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=ascPND3xDCo:8A_gGh4A2Lw:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=ascPND3xDCo:8A_gGh4A2Lw:7Q72WNTAKBA) http://feeds.feedburner.com/~ff/rss/cnn_us?i=ascPND3xDCo:8A_gGh4A2Lw:V_sGLiPBpWU</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=ascPND3xDCo:8A_gGh4A2Lw:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=ascPND3xDCo:8A_gGh4A2Lw:qj6IDK7rITs) http://feeds.feedburner.com/~ff/rss/cnn_us?i=ascPND3xDCo:8A_gGh4A2Lw:gIN9vFwOqvQ</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=ascPND3xDCo:8A_gGh4A2Lw:gIN9vFwOqvQ)
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