I have the first six volumes of The Universe on blu-ray, also from the History Channel, and have watched them many times. This set on the geology of our planet looks great. The people who do the narration, many of whom work for the U.S. Geological Survey, are outstanding. If you have a blu-ray player, get the blu-ray set. If you don't have a blu-ray player, get one. Season One holds more than 10 hours of information on 3 blu-rays. This set features geological information on Yellowstone, Hawaii and Iceland.
I have already ordered the Season Two set and hope there are many more to come. Highly recommended.