Fewer than half of Americans think climate change will pose a threat to their way of life within their lifetimes.

They should hear about Tangier Island.

The island, located in the Chesapeake Bay off the coast of Virginia's mainland, is quite literally sinking into the sea. Since 1850, its land mass has decreased by two-thirds, and scientific estimates suggest that within the next half century, it'll be completely uninhabitable.

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