This issue of the South Bulletin focuses on the Rio Plus 20 Summit to be held in 20-22 June in Brazil. Twenty years after the Earth Summit the world faces even more serious crises in the environment and the economy. Will Rio+20 do better in rising to the challenge of tackling the global crises? This issue of the Bulletin analyses the key issues to be decided at Rio, including reaffirming the Rio commitments, the Green Economy, sustainable development goals, finance and technology.