Ashley Ahearn

International leaders gathering in Paris to address global warming face increasing pressure to tackle the issue of "climate refugees." Some island nations are already looking to move their people to higher ground, even purchasing land elsewhere in preparation.

In the U.S. Northwest, sea-level rise is forcing a Native American tribe to consider abandoning lands it has inhabited for thousands of years.

Washington state is home to more glaciers than any other state in the lower 48, and they're receding faster than ever before. That's a problem for the Pacific Northwest, where glaciers are crucial for drinking water, hydropower generation and salmon survival.

China has closed its doors to all shellfish imports from an area that stretches from northern California to Alaska. The state of Washington says it's losing as much as $600,000 a week.

Among the shellfish not being harvested is the geoduck, a long-necked clam that can fetch up to $150 per pound in China. It's a major export for the Pacific Northwest.