var items = new Array (new ImageMetaData('** FILE ** This is an undated handout photo of a polar bear taken in the Arctic National Wildlife Refuge.  More than two-thirds of the world\'s polar bears will be killed off by 2050 - the species completely gone from Alaska - because of thinning sea ice from global warming in the Arctic, government scientists forecast Friday.    (AP Photo/Subhankar Banerjee, File)','http://msnbcmedia.msn.com/i/msnbc/Components/Photos/070907/070907_polarBears_hlg2p.jpg','4:55 p.m. ET, 9/7/07','Subhankar Banerjee / AP file','AP file',20646605));