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 ...

Colorado's forests store a massive amount of carbon, but dying trees -- mostly due to insects and disease -- have caused the state's forests to emit more carbon than they absorbed in recent years, ...

The world’s largest agricultural boom is transforming a vast savanna of hidden wonders. Here’s what happens when progress ...