According to NYC OpenData, the City of New York conducts a street tree census every 5 years. This data here is from the 2015 street tree census. The data is incredibly detailed with geo-coordinates, tree status (if it's alive or dead), the type of tree it is, damage to the sidewalk around it, and even where on the sidewalk it is located. Check it out here.
Scientists from the Woods Hole Research Center, the U.S. Forest Service, and the U.S. Geological Survey have created this map of every tree in America. It took 6 years' worth of effort and lots of satellite imagery.
I forgot to write about this. A few weeks back, my family and I went camping and we got hit with a serious storm. A giant tree branch snapped and it fell onto the tent covering our picnic table. SMASH. The tent was destroyed and luckily nobody was hurt. But here's a photo of the aftermath. Scary!
This beautiful time-lapse video was shot by Andrew Walker at the Kaibab National Forest in Northern Arizona. The video shows a controlled burn of one particular tree in the center of a forest. This looks really cool as a time-lapse but I bet it was even cooler to be right there to see it happen in real-time.