Otherlands

Very good pop science. Thomas Halliday is a skillful writer, and he takes us on an interesting journey through deep time. He reads the rocks and chemistry to provide us with detailed snapshots of ecosystems that once existed on this planet. These ecosystems changed dramatically over time and were truly alien worlds – very different indeed from the present.
This is an interesting book, but it is not predigested pap. Some science background would be helpful in understanding. I found myself going to the internet frequently for images of some of the lifeforms described.
Recommended for those with an interest in the history of our planet.
4+ stars.