Many of our forests have also been hit by disease and insect infestation that pose a mortal threat to their future.

FORBES: Fact and Comment

This, they hope, will help to overcome fears that continuous production of bt (as happens in current versions of the technology) actually promotes insect infestation rather than deterring it, because it stimulates the evolution of resistance.

ECONOMIST: Terminator genes

D-shaped holes in the bark or new tree shoots emerging at the root zone of your ash trees may be a sign of infestation by the Emerald Ash Borer, an insect native to the Far East that targets ash trees, says Dave Dailey of Birchcrest Tree and Landscape, in Rochester, N.

WSJ: Getting to the Roots of Your Trees' Stress