Is it a matter of excess population, excessive consumption or a combination of both factors? And, given the prominent place of consumption in wealthy, developed societies how difficult will it be to change such deeply ingrained social behaviors that are clearly detrimental to the environment?

Social behaviors.

Is it a matter of excess population, excessive consumption or a combination of both factors? And, given the prominent place of consumption in wealthy, developed societies how difficult will it be to change such deeply ingrained social behaviors that are clearly detrimental to the environment?