Earth 2100 (Blu-ray)

Some scientists warn that the environmental degradations seen in the early 21st century will only worsen to the point that, by the year 2100, modern civilization will collapse and humanity will be plunged into a subsistence-level feudalism similar to that of the Dark Ages. Hosted by journalist Bob Woodruff, this documentary special from ABC News imagines what that cataclysmic world would look like through graphic-novel-style animation and interviews with renowned scientists and experts such as White House science advisor John Holdren and New York Times columnist Thomas Friedman.