 have to realize that we are part of the natural world and we depend upon the natural world and we have been destroying the natural world. We've been destroying the forests, trees that can absorb carbon dioxide. We've been polluting the ocean, the ocean that can also absorb carbon dioxide and both forests and oceans give us the oxygen we need to breathe. We're in the midst of the sixth great extinction. We depend on healthy ecosystems and the healthy ecosystem depends on the biodiversity and gradually we are poisoning the land with chemicals and as well as destroying forests and oceans we're destroying so many other environments. We need to move into some of these innovations of science like solar, wind and and tide energy. Otherwise for my grandchildren and theirs the future is more than grim. It's very dark. We mustn't let that happen. We have a window of time which is closing and we need everybody who cares to get together and find solutions now.