Study suggests that if climate change continues unabated, there soon won't be enough snow in northern Alaska for polar bears to dig birthing dens.
There may not be enough snow in northern Alaska for polar bears' birthing dens.
INSIDE SCIENCE: The key science stories from September 2019.
Global warming a bear of an issue in Alaska
Polar bears are struggling to survive in the climate emergency
Climate change may destroy safe places for polar bears to give
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