We always have to be cautious when reading about certain aspects related to so-called climate change because we know sometimes it is propaganda not fact. Beware of fake news, albeit also don't distrust everything. This may be true, but may be for reasons other than climate change.
http://www.voanews.com/a/polar-bear-numbers-seen-declining-a-third-from-arctic-sea-ice-melt/3634238.html