, which officially begins here today.
Thousands of delegates, among them heads of state and government, Cabinet ministers and non-governmental organisation representatives, have already converged for the conference.
Brazilian President Dilma Roussouf will officially open the three-day event.
Other leaders will then address plenary afterwards while four roundtable discussions are scheduled to run concurrently with six plenary sessions.
Zimbabwe is expected to reaffirm its commitment to environmental conservation during conference. So far, the country is working to rehabilitate water bodies affected by siltation, adopting environmentally friendly energy sources and expanding afforestation.
Rio+20 marks the 20th anniversary of the UN Conference on Environment and Development held here in 1992 and also coincides with the 10th anniversary of the 2002 World Summit on Sustainable Development held in Johannesburg, South Africa.
It will run under a two-pronged theme, “A Green Economy in the Context of Sustainable Development (Poverty Eradication) and the Institutional Framework for Sustainable Development”.
The “green economy” concept primarily focuses on creating environmentally friendly economies that conserve natural resources and reduce pollution while sustainable development entails balancing human requirements and environmental protection.
The conference has already drawn up key discussion areas that include energy, water, food security, jobs, cities, oceans and disasters.
On energy, delegates will discuss the need to promote energy sources that minimise pollution of the environment.
They will also examine methods of improving access to safe water and ensuring food production and consumption do not negatively affect the environment.
An action plan as well as employment creation policies are also expected to come under the spotlight.
Participants are already working on resolving a standoff between developing and developed countries following indications industrialised states might renege on previously agreed commitments.
Last year, the African Union approved the Africa Consensus Statement to Rio+20, which pushes for developed countries to commit to a second period under the Kyoto Protocol.
The commitment would run from next year to 2017 in terms of the statement expected to guide the African perspective at the conference.
Africa is also targeting massive cuts in greenhouse gas emissions by 40 percent below 1990 levels within the next four years.
The continent is, in addition, seeking to ensure industrialised countries provide long-term financing, technology and capacity-building support to enable developing nations to effectively address challenges stemming from climate change.



