The warming of the planet is a main threat to our survivor and to many animals and plants survivor. So its just a chain of reaction of Chaos.
Pollution is also one of the main factors that many marine life is rapidly decreasing, acids rain is also a man made problem, air pollution is also causes to many diseases and the warming up of the planet.
All this improvement of living for us, cause us the life of millions of animals, plants and many deaths of humans. So maybe its just karma biting us in the ass for past generation ideas of a great Earth ( that is rapidly destroying itself)