'Frozen': Why kids can't 'Let it Go'

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You can't escape Disney's hit phenomena, "Frozen." And there's a science behind why you won't see it go any time soon.http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=edVMIpeOfgw:_NA1omeAC90:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=edVMIpeOfgw:_NA1omeAC90:7Q72WNTAKBA) http://feeds.feedburner.com/~ff/rss/cnn_us?i=edVMIpeOfgw:_NA1omeAC90:V_sGLiPBpWU</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=edVMIpeOfgw:_NA1omeAC90:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=edVMIpeOfgw:_NA1omeAC90:qj6IDK7rITs) http://feeds.feedburner.com/~ff/rss/cnn_us?i=edVMIpeOfgw:_NA1omeAC90:gIN9vFwOqvQ</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=edVMIpeOfgw:_NA1omeAC90:gIN9vFwOqvQ)
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