Thanks to human inaction on climate change, our planet continues to heat and polar sea ice continues to shrink and melt. Polar bears depend upon sea ice to hunt, and studies predict our planet will warm to the point where enough sea ice annually melts to lead to the disappearance of two-thirds of polar bears by 2050. The current decline in sea ice is already forcing polar bears to swim such long distances that they are drowning from exhuastion.
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