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An Iceberg The Size Of Delaware Is Ready To Break Off Antarctica

A nearly 2,000-square-mile section of the Larson C ice shelf is hanging on by a thread.
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A iceberg the size of Delaware is dangerously close to breaking away from Antarctica.

According to NASA, a big crack in the Larsen C ice shelf grew dramatically at the end of last year.

And now, the nearly 2,000-square-mile section of the ice sheet is hanging on by a thread — a flimsy 12-mile stretch of frozen water.

Experts think it won't be long before it breaks off. As one scientist told the BBC, "If it doesn't go in the next few months, I'll be amazed."

And when it does, it could create one of the biggest icebergs ever recorded and might lead to the collapse of the entire Larsen C shelf.

NASA says if and when the mammoth iceberg breaks away and melts, it won't make sea levels rise, simply because it's already floating.

But the Larsen C shelf prevents other glaciers from reaching the ocean. If the whole shelf breaks up, those glaciers could contribute to rising sea levels.

If researchers' estimates are on track, the ice the Larson C shelf is holding back could eventually melt and increase global sea levels by almost 4 inches. That's a lot.

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