Agence France-Presse: Countries could speed up their action against climate change if they tackled air pollution as well as carbon dioxide enissions, the UN Environment Programme said Friday. UNEP executive director Achim Steiner said there is strong evidence that the world’s climate is changing faster than initially expected, adding to the urgency for concrete measures against global warming. “It is… becoming clear that the world must also deploy all available means to combat climate change,” …