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How-to video site Howcast collaborated with the US Department of State to develop a media-rich web site for the Fifth Summit of the Americas, a strategic meeting between diplomats and world leaders from the western hemisphere, including President Obama and Secretary of State Hillary Clinton. The pressing issues headlining this summit will be human prosperity, energy security, and environmental sustainability. The summit, located in Port of Spain, Trinidad & Tobago, runs from April 17 (tomorrow!) through April 19, and there is an opportunity for the public to submit questions to be addressed on the final day.