The world’s biggest polluters and strongest economies — China and the United States — aren’t sending their No. 1s. Neither are India and Indonesia. That’s the world’s four most populous nations, with more than 42% of all the world’s people.

World leaders are converging Tuesday at the United Nations annual climate conference in Baku, Azerbaijan although the big names and powerful countries are noticeably absent, unlike past climate talks

World leaders have converged on the United Nations annual climate conference in Baku, Azerbaijan, though some major figures are missing.