For most sane and rational people, being invited to climb the spire at the top of One World Trade Center to photograph the view would probably result in a flat out “no”. For others, it’s definitely a “yes“, “sure“, or “absolutely!“, even when not entirely legal.
Back about two hundred years ago, the development of chemical photography brought forth the first camera. For the next one-hundred and fifty years, most photographers didn’t have an easy time at all with preserving the shots they took. Today, so little is left preserved from that time. Most photographs from the past are in a state of preservation today.
By announcing that their entire photography collection is now digitized and online for any person in the world to view, the board of the American Museum of Natural History are ensuring now that those preservations are never forgotten.