Ban Ki-moon

New York Declaration delivers a series of major new commitments from governments and corporates

From climate finance to forests and Leonardo DiCaprio - what will Ban Ki-moon's high-profile conference deliver?

Prime Minister due to represent UK along with Energy and Climate Secretary Ed Davey

UN Secretary General Ban Ki-moon gathers world leaders to progress action on tackling climate change

Climate commissioner maintains 2030 framework talks are on track as reports suggest Australian leader is to snub September summit

UN Secretary General calls on financial institutions to scale up climate funding, as Bloomberg launches fresh drive to boost green energy investment

UN chief says a 2015 climate deal could be undermined if developed countries fail to outline how they plan to mobilise $100bn fund

UN General Secretary attempts to counter widespread criticism over the lack of ambition at last week's earth summit

Secretary general tries to rally global community as failure to agree text casts air of gloom over forthcoming conference

International Energy Agency says CO2 emissions reached 31.6 Gt in 2011, as UN chief warns talks are stalling ahead of Rio+20 summit