تصاویری دلخراش از تغییر آب و هوا و تاثیر آن بر خرس قطبی

Heart-Wrenching Video: Starving Polar Bear on Iceless Land | National Geographic This is what climate change looks like. This starving polar bear was spotted by National Geographic photographer Paul Nicklen on Somerset Island. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Throug

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