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Poison spinach! User-generated content! Space tourism! Global warming! With wars raging on several continents, a political tug of war playing out in the U.S., billionaires touring the cosmos, and a new virtual economy blossoming online, the world saw its share of amazing moments in 2006. Throughout the year, PopSci.com provided perspectives on the most important sci-tech events, and here, in the spirit of bidding farewell to the old and ushering in the new, we offer a recap-our roundup of the most interesting and influential happenings of the auld lang syne. As we tip our hats to '06 and welcome in the new year, let's remember the PopSci motto: The future is going to be better.

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