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The decline is tied to the amount of time the bay is now ice-free, a period that is getting longer as the climate warms.

An ice-free Arctic could significantly impact the ecosystem and Earth's climate by changing weather patterns.

However, the new study showed that as the Arctic warms, snow- and ice-free areas increase, leading to an increase in dust emissions.

The Arctic is warming at least twice as fast as the rest of the planet, causing sea ice to melt and raising the risk of an ice-free Arctic summer.

Or this: You keep seeing headlines about melting ice caps — that the Arctic Ocean may be ice-free by 2050 — and you wonder, fleetingly, if you will outlive the polar bears.