Aerial sunset photo

Just 15 miles from the beach and the sunset is blocked by land.  Fly 175 feet up and the camera sees what a person on the beach sees.  This shows how quickly the earth's curvature effects view of distant objects, even one (the sun) ninety-three million miles away.  This is a relatively simple example of how our earth is not what it seems to be without assistance.  Then take into account something more complex like atmospheric changes which should make people think about the long term outcomes of their actions.