• L.A. wants Caltech and Google to count the city trees. Los Angeles Times . July 27, 2016. [URL]
  • L.A. tree counting goes high tech. Take Two, KPCC. Aug. 1, 2016. [URL, audio]
  • Engineers Teach Machines to Recognize Tree Species. Caltech News. Sept. 13, 2016. [URL]
  • Teaching machines to recognize tree species. New Terrain. October 3, 2016. [URL]
  • An algorithm to identify every tree. Science Friday. Jan 9, 2016. [URL]


  • Merlin Bird ID smartphone app. [iOS, Android]
  • Putting Merlin's new bird photo ID tool to the test. Audubon. Dec 20, 2016. [URL]
  • A birder in the hand: mobile phone app can recognize birds from photos. Caltech News. Dec 14, 2016. [URL]
  • Merlin Bird Photo ID mobile app launches. Cornell Chronicle. Dec 24, 2016. [URL]


  • Five years ago, AI was struggling to identify cats. Now it’s trying to tackle 5000 species. Dave Gershorn. Quartz. 11 April, 2017 [URL]