Great Lakes' past may offer clues on climate

Read the full story in the Chicago Tribune.

From one view of history, the Great Lakes are near record lows, approaching the bottom-scraping frustration of the mid-1960s.

From another, longer view, though, the lakes are nearly as high as they’ve ever been, just a few feet below the high-water mark reached at the end of the Little Ice Age in the 1850s.

Both pictures are scientifically accurate and are getting more attention from climatologists, lake scientists and environmentalists curious about history’s large climate cycles and how they tip the lakes’ eons-old balancing act of rainfall and runoff, heating and evaporation.

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