Source: Seattle Times - I TOOK my 8-year-old son to see "Earth," the cinematic version of the Discovery hannel's "Planet Earth" series so he could grasp the threat of global warming even as many adults appear to struggle with the concept. He did. "Earth" used stunning visuals, adorable animals and poignant narration in the rich baritone of actor James Earl Jones to show my son what his generation must fight for. The phrase "global warming" is never uttered but the link between the warming of the air we breath and the perilous plight of polar bears and other animals is clear, as is the rigorous science behind it.