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Shock Detectives

Shock Detectives

Explore This Section The Sun throws off an extremely fast stream of charged particles called the solar wind. This solar wind collides with the Earth and its protective magnetic field, generating a shock wave called “the bow shock.” There, at the bow shock, the...

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Farming in Ancient Lake Agassiz

Farming in Ancient Lake Agassiz

Editor's Note: Today's story is the answer to the May Puzzler.About 15,000 years ago, southeastern Manitoba sat beneath tens of meters of frigid water. Lake Agassiz—which once encompassed present-day Lake Manitoba, Lake Winnipeg, and Lake of the Woods—covered an area...

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Farming in Ancient Lake Agassiz

Farming in Ancient Lake Agassiz

Editor's Note: Today's story is the answer to the May Puzzler.About 15,000 years ago, southeastern Manitoba sat beneath tens of meters of frigid water. Lake Agassiz—which once encompassed present-day Lake Manitoba, Lake Winnipeg, and Lake of the Woods—covered an area...

read more