Donald

This is a systematic and methodological overview of the most numerous and important life forms. Most people will have their worldview of biology turned upside down. Naturalists and scientists will be reminded the the bacteria are running the show. It's a new look at nature and a framework about the hidden world that is everywhere. I ordered the author's field guide and plan to use it future nature walks.

Probably

More about Penn Jillette than the subtitle

Yes. But this is more in-depth.

Not necessarily.

Great performance. Penn Jillette is a raunchy, loud mouth and somehow lovable.

Great science, explicit and careful descriptions. Wonderfully read by Dawkins and his wife Lalla. Although I highly recommend it to anyone interested in the subject, those expecting it to be easily digested my get bogged down. Nevertheless, give it a try, perhaps listen to it more than once. If possible, augment it with a printed copy. I was captivated. I'm familiar nearly all of the subject matter but some parts were covered in a depth I never encountered.