Polar bears: Extreme lack of sea ice in Hudson Bay puts predators under pressure

Polar bear diet changes as sea ice melts

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As sea ice changes, so do polar bears - WWF Arctic

How do polar bears eat when there's no sea ice? Not well, study

Polar bear: a powerful predator on ice

Polar bears and climate change: What does the science say?

Move over polar bears, there's another top predator along the

Polar bears stuck on land longer as ice melts, face greater risk

Global Warming Is Driving Polar Bears Toward Extinction

Polar ecosystems in retreat « World Ocean Review

Why Sea Ice Matters National Snow and Ice Data Center

Polar bears fight for survival as sea ice melts – video

Sea ice cometh to Hudson Bay: freeze-up has begun

Receding ice leaves Canada's polar bears at rising risk