The full title is Blue Machine: How the Ocean Shapes Our World. This is a fascinating book about how the ocean works. Temperature, density, salt content—all play a part in determining what lives where, the weather, and much more. The ocean has a huge influence on human life, though this is not widely recognized. Years ago, I heard Jacques Cousteau say that human civilization could not survive the death of the oceans. This book provides more background on that statement. Highly recommended.

Author Helen Czerski has videos on YouTube which are worth watching. This one is a high-level summary of the book: youtube.com/watch?v=hNUcwcO6AS…

@bookstodon group