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Readers Pick: Top 10 Alternative Energy Bets

If you had to direct federal spending for research primarily to one form of alternative energy, what would you choose? We recently polled LiveScience readers on this, and with more than 5,000 responses, here are the Top 10 choices (as of 4/17/09). Disagree? Go back and read more about each approach and, if you like, change the vote.