the Greater Nomadic Council

History of the Universe

Not quite Stephen Hawking, but I found a pretty coherent and interesting history of how the universe was created. It's also capped with some fascinatingly plausible speculations as to what forms intelligent life may have taken on other planets. This one is my favorite:

On some planets, there are underwater civilizations built by aquatic primates who returned to the sea as the ancestors of elephants and whales did on our planet. Aquatic primates with hands with opposable thumbs created tools then technologies, and finally civilizations.

It's pretty long, but well worth reading the whole thing.