We move on to the inevitable: rising seas. Will it be worse than heat, drought, and floods?
All our lives, all our maps, our ports, and our commerce depend upon a steady sea level. All places around the world are marked so many feet or meters "above sea level". That is history. Now the sea level will rise, just from the greenhouse gases we have already put in the air, and the heat we have already put into the sea.
I interview Dr. Peter Ward, a thought-leader in the field, and a leading scientist. He's the author of the break-through book "Under A Green Sky". That book explains how relatively sudden (in geological time) mass extinctions could occur - due to greenhouse heating. The very bacteria in the sea change, emitting hydrogen sulfide, which kills off many land animals and plants. This view is now widely held, due to further scientific studies which also lead in that direction.