Dr. Charles Miller is a climate scientist at NASA who studies permafrost, the Arctic soil that is thawing as the planet warms and causing havoc in Alaska's boreal forest. To monitor changes in the permafrost, Miller's team flies a jet loaded with las... (more)er sensors over the Alaskan tundra. VICE News joins them on on their annual flight. Watch Mondays through Thursdays at 7:30 PM ET.