I thoroughly enjoyed watching this documentary. It is my opinion that the dialogue or script narrated is easy to understand that it doesn't require a professional degree, which makes it enjoyable for all young and old to watch and enjoy. I recommend it to all those who are interested in Earth history and science in general. I give credit to its creators who were able to cram 14 Billion years of history of the Cosmos and our Earth into a two hour presentation. The explanation of the Big Bang by Astrophysicist Alex Filippenko is succinct and easy to understand, as well what follows, with formation of the basic elements, and their evolution into heaver elements required as the building blocks of life billions of years later. In closing, I again recommend this presentation.