Crake succeeded in saving the environment of Earth. By killing all humans and replacing them with a species specifically designed not to get out of control and expand further than sufficiency, Crake did the best possible thing he could for the environment. Obviously, there are only a few humans who would agree that extinction and replacement is the way to save the earth, but one cannot deny that in terms of effectiveness of the measure, Crake’s plan was the best. Humans in any form do not have the restraint to refrain from expanding to the point where they harm the environment, according to Crake, and this could never change. The solution to the problem is surprisingly similar to several voluntary extinction programs that believe that humans should allow themselves to die off. Few are advocating killing everyone off, but that is what happens when you get a mad scientist. Crakers as a species are also a great environmentally conscious race because of their eating habits. They are completely vegetarian so they do not have to kill off any animals. They eat parts of plants that are hard to digest and so they don’t have to farm food for themselves the same way humans do, and they do not cook food so they do not have to make large fires and cooking methods in order to eat. This makes Crakers ‘in tune” with nature. Thus, Crake was the ultimate Environmentalist.