All of natural evolution is nature trying to find a dominant intelligent species smart enough to prevent it’s own mass extinction event, and to take evolution into it’s own hands. Over billions of years of evolution, after countless mass extinction events, this is the inevitable type of organism to survive past it’s own would be extinction event. Intelligent life is rare, sometimes it takes billions of years to evolve. But the true test of it’s ability to survive comes with it’s mass extinction event, if it can persevere and continue to evolve and leave the planet from whence it came. Thus for mankind to survive, it must remain vigilant. It must watch out for dangers, including a run away greenhouse effect. Perhaps one day our distant descendants will thank us for our vigilance. (For the record I am a devout Christian who believes in evolution and that the universe is 13 billion years old)