Higher levels of tree canopy cover may help prevent injurious pedestrian falls, according to a new study led by researchers at Columbia University Mailman School of Public Health. The research found ...

Global warming means that people are increasingly likely to need cool, shady spots in big cities. And one way of getting that is with trees — lots of trees, in fact. With a new tool called Tree Canopy ...

The D.C. area’s council of governments wants to get at least half of the region covered in trees. After years of shrinking tree cover, the Metropolitan Washington Council of Governments (COG) adopted ...