"The Presidents [Obama and Brazil's Dilma Rousseff] underscored the importance of the upcoming United Nations Conference on Sustainable Development (Rio+20) in Brazil as an opportunity to promote sustainable development through innovation and broad stakeholder engagement. They emphasized the importance of broad participation in the High Level Segment of the Conference, on June 20-22, 2012. In support of this expanded collaboration, they recognized progress on mobilizing investments in smart and sustainable infrastructure in Rio de Janeiro and Philadelphia under the US-Brazil Joint Initiative on Urban Sustainability."
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