Tonight on the "CBS Evening News": Heat warnings go up for millions of Americans; low interest rates spark real-estate frenzy in California; heavy air pollution concerns parents in Beijing; and a ... more 
Tonight on the "CBS Evening News": Heat warnings go up for millions of Americans; low interest rates spark real-estate frenzy in California; heavy air pollution concerns parents in Beijing; and a salute to the first black American regiment. less 
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Wed, Jul 17, 2013 8:55 PM EDT