Countdown: 18 ideas that will change the world in 2012

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All month on the Huffington Post, we’ve been counting down 18 great ideas from 2011 that we think will change the world in 2012 and beyond. Today’s post ends the countdown with a powerful idea: Kids save the world! Watch John Hunter’s TEDTalk on his World Peace Game and read his essay on the Huffington Post.

And catch up on all 18 great ideas — with original essays from the speakers (and friends) that bring their ideas right up to date at the end of a turbulent, fascinating year. From world politics to new technologies, from education to psychology, recap the ideas that we think (and we hope!) will shape the coming decade.

See the full #18Ideas countdown on the Huffington Post >>