Sustainability is key to climate change, to multifunctional agriculture, to a future that is faithful to our children's needs and is a moral responsibility of government. I served on the Pew Commission on Industrial Farm Animal Production and we concluded that business as usual is not possible, we need to be sustainable, the same message came from the International Assessment of Agriculture in Science, Technology and Development (IAASTD)...so we need to "get on the ball" Dave Andrews