When teaching history, I used to try to explain this to students- usually with little success. People have a hard time grasping how many people it took to make them. and how that gives us huge family trees. ** This is very interesting.
As solid and unshakable as we think our civilization is, its grip on nature is tenuous at best. If any cracks appear in the faces of our buildings or our machines, nature is quick to move in and take over. With this in mind, here are 21 photos of places a