New York Times: The European Union’s commissioner for the environment sought Thursday to tamp down expectations that wealthy nations would immediately hand over vast sums of money demanded by developing countries to manage global warming. Such funds “cannot be a blank check,” the commissioner, Stavros Dimas, said at a news conference. José Manuel Barroso, president of the European Commission, the E.U.’s executive body, said fast-emerging economies should be expected to do more to finance …