The Last Hours of Ancient Sunlight

The threats Thom Hartmann surveys range from ecological damage and genetic engineering to virulent disease, water shortages, famine, war and the end of cheap oil. He describes what is happening to the planet, why modern culture keeps behaving blindly toward it, and how the problem can still be fixed. His aim is to help readers understand and repair their relationship with the natural world, with natural resources and with one another. The revised edition adds new material and puts more weight on political activism and how it affects corporate behavior. Since it was first published, it has become one of the core handbooks of the environmental activist movement.

Leonardo DiCaprio endorsed Hartmann's work, praising the range of unusual subjects he finds in far-flung corners of curiosity.