Braasch says photos best illustrate what is already happening, but can lead the discussion on where we are going. He quotes a Chinese proverb: If we don't change direction, we'll end up where we're going."
For a long time -- the first 15 years that we knew about global warming and did nothing -- there were no pictures. That was one of the reasons for inaction.
Climate change was still "theoretical," the word that people in power use to dismiss anything for which pictures do not exist. It is the reason we don't see shots of coffins coming back from Iraq; it's the reason the only prison abuse we really know about was at Abu Ghraib. Without pictures, no uproar; not in a visual age.
But now the pictures have started to come, and they will not cease.