Now playing Next USA Watch: Leonardo DiCaprio speech among five must-see clips on UN climate summit 24/09/2014
Now playing Next United Kingdom Queen 'purred' with joy over Scotland referendum result, says Cameron 24/09/2014
Now playing Next The Global Conversation euronews speaks to Ban Ki-moon ahead of key UN and climate change talks 23/09/2014
Now playing Next World News Carbon emissions - how does Europe compare with the rest of the world? 23/09/2014