Humanity; The most intelligent species on the planet, capable of anything, but is governed by its aggression and youth. A species fast in development slow in maturing.
Once a species that cared about it’s home, it’s provider, let it’s ego dominate it’s decisions. A period of ignorance and neglect has had profound effects across the world. Effects, which can be reversed, if nature is given the time to repair itself.
A supplement to the factors that support life's emergence is the notion that life itself, once formed, becomes a habitability factor in its own right. An important Earth example was the production of oxygen by ancient cyanobacteria, and eventually photosynthesizing plants, leading to a radical change in the composition of Earth’s atmosphere. This oxygen would prove fundamental to the respiration of later animal species. .. http://en.wikipedia.org/wiki/Planetary_habitability