3 min read At the dawn of the Paleogene—the beginning of the Cenozoic ... trend began in earnest following a sudden temperature spike about 55 million years ago. Sea surface temperatures rose ...
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The Alaska Railroad's Golden Spike Hammered in by President Harding Will Return to Its Home StateHarding hammered the golden spike into a bridge in Nenana now known as the Mears Memorial Bridge.The “ambitious” single-span trestle bridge over the Tanana River closed the Alaska Railroad’s ...
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