The colossal iceberg known as A23a has been slowly spinning in one spot of the Southern Ocean since April. Here’s what experts have to say on the phenomenon.

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It's unclear how often Taylor columns form in the ocean and how frequently icebergs get trapped in them. In the case of A23a, it's anyone's guess how long it will spin in the vortex.

The undecided voter. The possibility that such a thing still exists in our divided country seems as improbable as leprechauns, mermaids or gas under $3 a gallon. Yet poll after poll shows they do ...