Wikipedia 10K Redux by Reagle from Starling archive. Bugs abound!!!
Tim, I don't believe the statement that organisms ''need'' to evolve is true. A lot of environments are sufficiently close to being static, or at least sufficiently widespread, that something decently adapted thereto would be fine for an unbelievably long time. Case in point, any of the living fossils, which have undergone some evolution but obviously nothing too forced. Unfortunately I don't know what to replace the line with.