We built the wind turbines with a skin that was solar, so the blades harnessed the wind and the sun. That energy drove the desalination and pumped the water to huge reservoirs for drinking, agriculture and a store of energy for hydroelectric if we ever needed it. Then there were the new boats, the ships that had smaller versions of the wind and sun turbines built into their bows, they were totally clean transportation. Some built them as modern sailing ships, the sails were there for the traditional reasons yet also with micro wind and solar energy cells. That was the end of dirty energy right there. We expanded our imaginations and all the answers tumbled from our brains as if we were kids who'd just plucked up enough courage to open the cookie jar.