Arctic

Permafrost-preserving technology may work better farther north as climate warms

Some 200 big rigs travel the Dalton Highway on an average day to bring supplies to the giant Prudhoe Bay oilfield complex. All that trucking requires regular repair work along the 414-mile mostly gravel road – an ongoing and costly challenge that could become even more if road-building technologies developed to protect permafrost under roadways no longer work.

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