Long and hard the Centaurian scientists worked to discover and evaluate data on the new planet and the incredible beings that lived there. They found a planet with many pleasant places where there were cool plants and cool animals. And they even found quite a bit of mud at river deltas and other places. But they just couldn’t understand the dominant species on the planet. The dominant species kept doing uncool things like pouring carbon dioxide into the planet’s atmosphere. Now carbon dioxide warmed the planet up so those cool green places and the mud could become sad, lifeless deserts. And the dominant species kept pouring pollutants into streams, rivers, lakes and oceans so those streams, rivers, lakes and oceans and muddy places became bad places and gave off horrible smells and life th