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Can nature mitigate oil spills?

From BBC Radio4

President Obama says that he holds BP fully responsible for the massive oil spill in the Gulf of Mexico, which he said was potentially an "unprecedented environmental disaster". Fellow of the Institute of Economic Affairs Richard North and senior climate advisor for Greenpeace Charlie Kronick, debate the long-term effect of the oil spill on wildlife, fisheries, and the tourism industry.

Listen in full on: http://news.bbc.co.uk/today/hi/listen_again/newsid_8657000/8657755.stm