So we really need trees to help keep the world balanced and cool, and to reduce the greenhouse ... Of course, we shouldn’t forget that trees are also beautiful to look at and great to play ...

Credit: Warren LeMay/Flickr, CC BY-SA 2.0 Because trees can cool cities by providing shade and evaporating water into the atmosphere, greening city streets is an often-touted strategy for climate ...

New York’s forests are in trouble. Tiny, destructive insects are spreading fast, killing trees that have stood for hundreds ...