The Critical Research That Unlocks Our Climate’s Past and Future May Be on Thin Ice

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To the untrained eye, the National Science Foundation (NSF) Ice Core Facility in Lakewood, Colorado, doesn’t look like much: a boxy brick building packed with shelves of ice-filled metallic cylinders 10 centimeters in diameter. But to the more than 100 scientists who pull from its frozen records annually, it’s a treasure trove of information on our changing climate.

The facility holds more than 13 miles—200 football field lengths—of tubes of ice collected from Antarctica, Greenland, and other parts of North America. Their contents can date back hundreds of thousands of years, allowing researchers to engage in scientific time travel. Crucially, the ice provides clues as to what’s in store for our climate down the road. But now President Donald Trump’s assault on science has put this invaluable resource at risk.

“If you drill down in an ice sheet, the deeper you go, the older the ice gets,” says Benjamin Riddell-Young, a postdoctoral researcher at the University of Colorado, Boulder, who studies methane isotopes. One recent experiment involved analyzing molecules trapped in ancient ice from the West Antarctic Ice Sheet Divide, including cores recovered from around 2 miles underground. “When the snow falls and compresses into ice, it forms these little bubble cavities that trap the air at the time the ice was formed,” he explains.