I've watched about 3/4 of the desert episode and 1/2 of the ice world episode and they are STUNNING. The work that went into this production is impressive. 5 years in the making. My kids (2,5,7) were enthralled. They showed male emperor penguins protecting eggs between their bellies and their feet for four months in temperatures down to 75 below. They used time lapse to show the male penguins huddling in groups of thousands against the winds, rotating position so that each penguin would get a turn in the safe center of the huddle as well as on the unprotected outer edge. They used shots from space to show the freezing and melting of the ice mass in Antarctica. The HD looked fantastic. Highly recommended. :thumbs up smiley: