- Some polar bears in Greenland survive on surprisingly little sea ice or ‘Glacial mélange’ (a floating mishmash of icebergs, sea ice fragments and snow that exists year-round) that could provide a last, temporary refuge for some bears as the Earth warms https://www.sciencenews.org/article/polar-bear-greeland-sea-ice-glacial-melange-climate-change 28 comments environment