Polar bears and grizzly bears hybridization seems to be increasing, and an obvious contribution to this increase is global warming.
This may be sad in the demise of the polar bear, but philosophically I don't see it as a negative. As a believer in evolution, I accept it equally in the present and future tense, not just in the past tense. Trying to preserve the biosphere in its current configuration is a fool's errand, and the perfect goal of NGO and political careerists who can make money perpetually piloting the public policy ship to a land that does not exist.
Many are comfortable with the knowledge of geological and life era's in which mass extinctions and new species came along, and then not comfortable with industrialization doing the same. I am comfortable with the planet's morphing due to industrialization. The Earth without an Anthropocene Era (the result of industrialization) is a failed planet. I will say that again, a planet that does not evolve to industrialization is a planet undeserving of respect, a dead end planet. Now on to creating a Dyson Sphere, since an unindustrialized solar system is a backward, dead end place worthy of conquest by superior life forms far away.
References:- Bears: http://en.wikipedia.org/wiki/Grizzly%E2%80%93polar_bear_hybrid
- Anthropocene: http://en.wikipedia.org/wiki/Anthropocene
- Dyson Sphere: http://en.wikipedia.org/wiki/Dyson_sphere
