Many of these cores, now housed at OSU in Corvallis, Oregon, were dredged up from the bottom of the Antarctic Ocean by researchers at Florida State University in Tallahassee. Inside the cracked dirt of the sediment core were microscopic bits of shells, rocks and fossils, all clues to how the ocean looked millennia ago. It was filled a cylinder, more than a foot long, of light-brown mud: layers of sediment collected from the ocean floor. Stanley paused for a moment, chose a plastic tube with an orange lid and held it out so I could look through the clear siding. Shelves 20 feet high towered overhead, loaded with tubes and boxes. Inside a large storage room at Oregon State University, Valerie Stanley opened the door to a massive refrigerated area, releasing a blast of cold air.
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