The Big Thaw.

Discusses the evidence that human activity such as the burning of fossil fuels and the emission of greenhouse gases have influenced global warming. Investigation of changes in the distribution of ice, salinity, levels, and temperatures of the oceans worldwide; Impact of the thawing permafrost in Alaska, Peru, and Switzerland; How ocean water warms and expands when ice melts and flows to the seas from glaciers and ice caps; Effect of rising sea level, sinking land, and eroding coasts on the Gulf of Mexico; Consideration of how human engineering can increase the rate at which land sinks as a result of channels and levees; Possibility of a future breakdown of the thermohaline circulation if the ocean temperatures and salinity change too much.