As Carl Sagan and others have pointed out, we need to get off this planet and spread humanity around so we don't have all our "eggs" in one basket here on Earth. Robotic exploration is great but we need to begin colonization of the Moon and Mars. I'll leave it to the experts to work out the details and priorities, but we need to have humans exploring and living in space. To do this we will need more international cooperation to fund projects and commercial applications to develop technologies and future business interests in space. Let's get started!
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