Rio 20 years later: Pollution up, forests down Current Status: Blessed (1) Change Status: BlessedPublishedUnpublishedRestoredQuarantinedDuplicatedCensored Seth Borenstein, AP Science Writer Wed Jun 20, 2012 8:50 AM ussciencescinumbersearth-by Tweet Discuss: ! keyboard shortcuts: V vote up article J next comment K previous comment
