In a city park girding the gray Atlantic ocean, dozens of people stood on line before a giant tent, each toting small bags of garbage.
Archive 
Evaristo Sa, AFP/ Getty Images
The Rio+20 Conference Went from Good Intentions to the To-Do List from Hell
Rio+20
Rio+20 had good intentions, but the outcome was conspicuously short of goals, writes Mac Margolis.

Trending Now