@GuardianEco - Rio+20: the Earth Summit diaries - From Rio de Janeiro, Jo Confino provides behind the scenes insight of all that's going on at the Earth Summit over the weekend - Photo: Rio+20: the host city of the UN's Earth Summit. Photo credit: Marcelo Sayao/EPA
Earth Summit: A Report Card to Preview the Rio+20 Mega-Conference - The world has failed to deliver on many of the promises it made 20 years ago at an Earth summit in Brazil. Photo source: Nature magazine. #RioPlus20
Canada needs to show leadership at Earth Summit, Charest says
Can Rio +20 solve world's environmental problems? Some critics have already dismissed the event as a hugely expensive talking shop that stands little more chance of succeeding than previous environmental summits. Others are more optimistic. CNN looks at 20 years since the first earth summit. We also examine key issues surrounding the conference.
Earth Summit 101: A Jedi’s primer to the meeting in Rio
Rio+20 Earth summit talks turn into rubber-stamp job - UN chief urges leaders to be more ambitious after concerns they will sign a pre-negotiated text but won't commit on key issues - Indigenous Brazilians commute to the People’s Summit, a parallel event during the Rio+20. Photograph: Felipe Dana/AP #RioPlus20