No Maple Syrup By 2100?

01/11/2012 04:31 pm ET
  • Mother Jones

A few years ago, Martha Carlson, a veteran maple farmer, began noticing subtle changes in her 60-acre "sugar bush" in Sandwich, New Hampshire: Maple sap was unusually dark, and leaves were falling too early, never having reached postcard New England color. Her sugar maples, some of them nearly 300 years old, were sick.

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