As cities grow, so does the need for urban trees

“It’s easy to rattle off the necessary and wide-ranging tasks that trees perform in urban areas. They’re unarguably invaluable. However, it can be tricky when quantifying the exact monetary value of these air-scrubbing, temperature-cooling, mood-improving, flood-mitigating machines. Urban trees are obviously worth a lot. But how much?” Click here to read more from Mother Nature Network.