What does an iceless Lake Superior portend?

From Duluth, Lake Superior is a colossal expanse of blue this week with no otherworldly ice shards smashed against the shore or colorful fish houses decorating stretches of white.

Widest coral in the Great Barrier Reef identified

An exceptionally large coral—a structure made up of small marine animals and calcium carbonate—discovered in the Great Barrier Reef is described in Scientific Reports this week. It is the widest and sixth tallest coral ...

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