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sesay rio20 summit history_00001025
sesay rio20 summit history_00001025

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    Earth Summits through the years

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Earth Summits through the years

As Rio + 20 wraps up, CNN's Isha Sesay looks back at what happened at the 1992 and 2002 U.N. Earth Summits.

Earth Summits through the years

As Rio + 20 wraps up, CNN's Isha Sesay looks back at what happened at the 1992 and 2002 U.N. Earth Summits.