PRESIDENT Michael Sata yesterday left for Brazil to attend the bio-fuel and environmental sustainable development conference.
The high-level conference brings together several world leaders to review progress made on the 1992 meeting.
The Rio+20 summit is expected to set a path for nurturing the planet's natural bounty and promoting green growth.
President Sata, who is accompanied by First Lady Christine Kaseba, left around 16:30 hours aboard a South African commercial flight at Kenneth Kaunda International Airport.
President Sata was seen off by Vice-President Guy Scott, Finance Minister Alexander Chikwanda, Home Affairs Minister Kennedy Sakeni,
Lusaka Mayor Daniel Chisenga and the Secretary to the Cabinet Evans Chibiliti.