“We have defined the future we want,” Al-Nasser said, making a reference to the title of the Conference’s outcome document, in his remarks to a meeting of the General Assembly held to adopt a resolution endorsing the document. “Now what is important is implementation.”

Rio+20 was attended by some 100 Heads of State and government, along with more than 40,000 representatives from non-governmental organizations, the private sector and civil society, all seeking to help shape new policies to promote global prosperity, reduce poverty and advance social equity and environmental protection.

At the end of the gathering, participants agreed an outcome document which called for a wide range of actions, such as beginning the process to establish sustainable development goals; detailing how the green economy can be used as a tool to achieve sustainable development; strengthening the UN Environment Programme (UNEP); promoting corporate sustainability reporting measures; taking steps to go beyond gross domestic product to assess the well-being of a country; developing a strategy for sustainable development financing; and, adopting a framework for tackling sustainable consumption and production.

The document also focused on improving gender equity; recognized the importance of voluntary commitments on sustainable development; and stressed the need to engage civil society and incorporate science into policy; among other points.

Rio+20 followed on from the Earth Summit in 1992, also held in Rio de Janeiro, during which countries adopted Agenda 21 – a blueprint to rethink economic growth, advance social equity and ensure environmental protection.

“Rio in 1992 and Johannesburg in 2002 put sustainable development on the map, but Rio+20 has defined a new vision of development for the future, which will be equitable and inclusive and will take into account the limits of our planet,” Al-Nasser said.

“A number of processes have been launched in Rio, but in order for them to be successful, we need development cooperation,” he added. “International development cooperation must continue to play a key role in promoting solutions for our global challenges.”

“These last three days are going to be absolutely crucial for diplomats,” the Executive Coordinator of Rio+20, Brice Lalonde, said in an interview. “Delegations are going to be working day and night, dividing themselves into splintered groups to work more thoroughly on each issue, which is something that they have accepted to do only for the last few days.”

The talks are the third and final session of Rio+20’s Preparatory Committee, which will continue deliberations until Friday. The Committee’s various groups will discuss issues such as the management of water, education, health, sustainable transport, desertification and climate change, among others.Their job is to achieve renewed political commitment for sustainable development. We aspire to nothing less than a global movement for generational change.

More than 100 heads of State and government, along with thousands of parliamentarians, mayors, UN officials, Chief Executive Officers and civil society leaders are expected to attend Rio+20, from 20 to 22 June, to shape new policies to promote prosperity, reduce poverty and advance social equity and environmental protection.

Mr. Lalonde stressed that the groups will help accelerate negotiations on the outcome document – but warned that this may make it harder for small delegations with only a few members to follow them.

“This requires a lot of trust to be able to give a kind of mandate to your group to negotiate on your behalf,” he said.

Mr. Lalonde underlined that despite the world’s current economic and political uncertainties, countries need to think in the long-term when negotiating the agreement, as it will be a blueprint for generations to come.

“We are living in a very difficult crisis, but this conference is about thinking of the next 20-30 years and not only the crisis,” he said. “We need to reach a point by which all countries agree to discuss means of implementation to help developing countries follow a sustainable development path even though these entail costs.”

During the opening of the Preparatory Committee’s session, the Secretary-General of Rio+20, Sha Zukang, urged countries to seize the moment to achieve progress on negotiations.

“We need to look at the big picture,” Mr. Sha told the Preparatory Committee members. “The whole world is watching and we simply cannot falter.”

Mr. Sha emphasized that the document must reflect the importance of the role of non-governmental organizations and private enterprises in achieving sustainable development, as well as the importance of transferring technology and providing capacity building for developing countries so they can shift towards a green economy. “Governments bear responsibility, but they cannot do it alone,” Mr. Sha said.

The previous round of Rio+20 preparatory talks – focussed on the gathering’s outcome document – ended in New York in early June, with agreement reached on more than 20 per cent of the document, with many additional paragraphs close to agreement.

Secretary-General Ban Ki-moon has said that there is still much work ahead, but foundations are in place for agreement on the remainder of the negotiating text that is expected to become the outcome of the conference.

“I expect the negotiators to accomplish this in the days before ministers and world leaders arrive in Rio. Leaders will then act to resolve all outstanding issues,” he said in a press conference last week. “Their job is to achieve renewed political commitment for sustainable development. We aspire to nothing less than a global movement for generational change.”

Rio+20 follows on from the Earth Summit in 1992, also held in Rio de Janeiro, during which countries adopted Agenda 21 – a blueprint to rethink economic growth, advance social equity and ensure environmental protection.