When food is abundant, and the climate is favorable, evolution doesn t happen because every organism, no matter how inefficient it is, can survive long enough to produce offspring. It is only when times are hard that only the best survive. When the forests were replaced by tall grasses, those ape-like creatures that could walk upright evolved into Homo erectus . If not for that environmental change, we might all still be walking on four legs. We evolved from apes to people partly because of environmental changes.
Pollution puts environmental pressure on many species.
Most species breathe air and drink water. Polluting the air and water makes it difficult for most species to survive. We should pollute the air and water as much as we can. We should let atomic power plants emit as much radiation as possible. This will kill off the weaker species, creating vacancies in ecological niches that superior species will fill.