A few weeks ago, my daughter came home quite distraught from school. “Daddy, the polar bears and penguins are dying and it is our fault” she declared at the dinner table. Having spent many hours admiring the polar bears and penguins at the Central Park Zoo, this was something that all three of our kids immediately agreed was to be stopped. So they wanted to know what could be done about it. We had one of the better dinner discussions in a long time and produced a list of things we would do pe...