McKenna right again

As we move into the threat of atomic war a voice from the 90's

A mushroom told him “this is what it’s like when a species prepares to leave for the stars.” Let us have madness openly.

The Cold And The Dark: The World After Nuclear War
This book reprints Sagan's essay, "The Atmospheric and Climatic Consequences of Nuclear War" and Erlich's "The Biological Consequences of Nuclear War" with summaries of papers by other scientists.

• Nuclear winter

  The book describes nuclear winter as a long-lasting and severe global weather disturbance that would occur after a nuclear war. The dust and smoke from nuclear explosions would block sunlight and heat, causing a significant drop in temperatures. The book predicts that nuclear winter would last for 10–15 years.

• 100 megaton nuclear war

  The book discusses the effects of a 100 megaton nuclear war, including the amount of soot that would be released into the atmosphere, the amount of radiation, and the increase in ultraviolet rays. The book also discusses the potential effects on plants, animals, and humans, including starvation, disease, and cancer.

• The conference

  The book includes the text of a dialogue between Soviet and American scientists on nuclear winter, as well as technical papers that support the book's conclusions. The conference brought together over 200 scientists from many countries. Carl Sagan and Paul Ehrlich presented papers on the atmospheric and biological consequences of nuclear war, respectively.