Washington, July 29 (DPA) The US and China have agreed to work together to stabilise the world economy and explore ways to cooperate on climate change.

The global powers concluded two days of talks in Washington Tuesday.

The dialogue focused mainly on recovering from the economic downturn but included a broad array of topics from global warming to nuclear proliferation and terrorism.

'I came away from the last two days even more convinced than when we started, that an open relationship ... is in the best interest of both our countries and the world,' US Secretary of State Hillary Rodham Clinton said Tuesday.

Chinese State Councillor Dai Bingguo called the talks 'unprecedented' in the four decades since the United States and the People's Republic of China established formal relations.

The countries signed a document on climate change and clean energy obligating the world's two leading polluters to cooperate on reducing greenhouse gases, but no concrete goals were set.

China and the US emit nearly half of the world's greenhouse gases, which are blamed for climate change and are considered critical to the prospects of a new global treaty being reached at a major UN summit in December in Copenhagen.

The document 'provides our countries with direction as we work together to support international climate negotiations and accelerate the transition to a low-carbon economy', Clinton said.

Government officials from both countries suggested the two nations were no closer to resolving their differences over how much to reduce their climate-damaging emissions. US climate envoy Todd Stern said negotiators were 'slogging ahead' and still held out hope for a deal by December.

China argues that industrial nations bear a greater responsibility for addressing climate change, but the United States wants emerging powers like China and India to agree to their own international targets for limiting the growth of their emissions.