We did a review of the last two change-of-variable problems that we've worked on. Then we switched gears and combined a bit of history, physics,and using art to capture emotions along with a sense of time and place. We discussed wwI followed by WWII with their horrendous casualty rates, the development and use of nuclear weapons and the deep-seated paranoia of the nineteen-fifties. The we watched a uTube clip of the closing 12 minutes of "On the Beach."