Two decades after the first Earth Summit in Rio, world leaders are back for another attempt to jump-start a sustainable global economy. We hear what's happening at Rio+20. Who's there? Who's not? Also, the Taliban attack a hotel outside of Kabul. On Reporters Notebook, yesterday Mitt Romney told Hispanic leaders that Democrats take them for granted. What has the President told them today?
Banner image: US Secretary of State Hillary Clinton delivers a speech during a plenary session of the UN Conference on Sustainable Development, Rio+20, in Rio de Janeiro, Brazil, on June 22, 2012. Photo by Antonio Scorza/AFP/GettyImages