Dead leaves hang on an infected Ash tree in Pound Farm Woodland on November 8, 2012 near Ipswich, United Kingdom.
Dead leaves hang on an infected Ash tree in Pound Farm Woodland on November 8, 2012 near Ipswich, United Kingdom.

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    App tracks UK's silent killer of trees

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App tracks UK's silent killer of trees

Some say efforts to track and destroy a disease killing ash trees in Britain is too late. CNN's Nic Robertson reports.

App tracks UK's silent killer of trees

Some say efforts to track and destroy a disease killing ash trees in Britain is too late. CNN's Nic Robertson reports.