Earthwatch Institute's Urban Tree Project: Cambridge, MA, USA

Edited by Marie Studer, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Matt Lavin, some rights reserved (CC BY-SA)
  • 2. (c) Ross, some rights reserved (CC BY-NC-SA)
  • 3. (c) Shihmei Barger 舒詩玫, some rights reserved (CC BY-NC-ND)