The book is also sold under the name
What's Really Happening to Our Planet?: The Facts Simply Explained
One page points out the soil issue which should become a major issue as the climate changes:
More on this topic, and the reasons for organic farming is explained in another book. Basically we kill all the organic matter in the soil, including bacteria and other life, between crops. If you leave that matter in the ground, it prevents erosion and also retains water. Natural soil retains water.
it is the combined use of farming chemicals and leaving bare soil that causes that. No till agriculture leaves some stubs over the winter and helps retain soil, and can be done with "chemical" farming as well.
A related video: