NEW ORLEANS (AP) — Permafrost in the Arctic is thawing faster than ever, according to a new report released Tuesday.

Water is also warming and sea ice is melting at the fastest pace in 1,500 years at the top of the world.

The annual report released Tuesday by the National Oceanic and Atmospheric Administration showed slightly less warming in many measurements than a record hot 2016. But scientists remain concerned because the far northern region is warming twice as fast as the rest of the globe and has reached a level of warming that's unprecedented in modern times.

"2017 continued to show us...