They have successfully killed the insect behind the greening disease in the lab, but the real test will come over the next ...

The Larimer Conservation District has removed more than 100,000 trees from Colorado's forests — all for the betterment of the land.

Global warming is producing a rapid loss of plant species -- according to estimates, roughly 600 plant species have died out since 1750 -- twice the number of animal species lost. But which species ...