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A UK man who thought he was doing the environment a favor by catching invasive American signal crayfish out of a local river has been fined £4,000 ($8,000) aftger authorities discovered he had actually caught and eaten the native white-clawed crayfish, an endangered species. Also, turns out he was breaking the law just by trapping for crayfish in Cumbria.

A recent report from the city of Minneapolis indicates that the city is poised to lose all 200,000 of its ash trees to the emerald ash borer. A summary of the Greenprint report is available here , and the entire report can be downloaded here .

Should established non-native mammals be granted " ecological citizenship "? That was one of the conclusions of a new UK study, " The State of Britain’s Mammals ."