The change from a solid state, snow and ice, to a liquid state, water, makes the Arctic sensitive to climate change and introduces many dangerous positive feedback loops that can drive sudden detrimental climate shifts that can affect the whole planet and human civilization. Includes interviews with leading glacial experts from around the country. Includes: Impacts of global warming, the Warming of the Arctic, the Melting Ice Caps, Thawing of the Permafrost, and Melting of Glaciers and Ice Sheets. Spanish subtitles. .