Poorer people on average probably take less care of their environment than richer people, but that's not what I'm talking about. Them _becoming poorer_ isn't harming their environment. It's the derivative that's important.
Someone is becoming very wealthy pulling oil out of the Niger delta, but the people living there are becoming much poorer as a result. http://234next.com/csp/cms/sites/Next/Home/5524695-146/niger...