externality

“Not pricing in that ‘negative externality’ — as economists put it — has been the greatest market failure of all time.”

"In economics, we call that externality," she said.

In traditional economics-speak, hidden costs are known as externalities – spillover effects from production that are caused by one party but paid for by another.

Analysts think environmental externalities may come under greater scrutiny for waste-to-energy projects selling offsets as the global carbon market evolves beyond the Clean Development Mechanism to a new U.N.-run program.

“We create prosperous and exclusive communities, but in so doing also create neighborhoods with concentrated despair — the externality of stockpiled opportunity.”