Matthew Druckenmiller

What happens up in the Arctic doesn't always stay up in the Arctic.

Its warming directly influences global sea level rise, weather patterns, and wildlife migrations, says Matthew Druckenmiller.

He's a scientist at the National Snow and Ice Data Center in Boulder, Colorado, and lead editor of this year's report.

The Arctic is warming more than twice as fast as the rest of the planet.

For NPR News, I'm Barbara Moran in Boston.