June 19, 2012 Compiled: 1:07 AM
By SIMON ROMERO and JOHN M. BRODER (NYT)
The meeting will address poverty, energy, the environment and the links between them. But the conference is overshadowed by economic and political crises around the world.
By CHRISTIAN AZAR, THOMAS STERNER and GERNOT WAGNER (NYT)
Carbon emissions have increased by 50 percent since the first Earth Summit meeting in Rio de Janeiro, but the rapid development of wind and solar energy offers hope.
By GRO HARLEM BRUNDTLAND (NYT)
Our generation is the first to understand the risks facing humanity. At Rio +20 world leaders must act decisively.