Ufo's: A Scientific Debate

By Carl Sagan, Thornton Page

The cold and the dark

By Walter Orr Roberts, Carl Sagan, Paul R. Ehrlich, Conference On The Long Term Worldwide Biological Consequences Of Nuclear War 1983 Washington D.C., Donald Kennedy, Conference On The Long Term Worldwide Biological Consequences Of Nuclear War 1985 Washington D.C. .

The Cold and the Dark

By Carl Sagan, Paul R. Ehrlich, Donald Kennedy

The Dragons of Eden: Speculations on the Evolution of Human Intelligence

By Carl Sagan

Presents an overview of human evolution and discusses human and animal intelligence, the mechanisms of the brain, memory, sleep, myths and legends about evolution, and the possibility of intelligen...

MURMURS OF EARTH

By Jon Lomberg, Carl Sagan, Linda Salzman Sagan, F D Drake, Ann Druyan, Timothy Ferris

Preface: On August 20th and September 5th, 1977, two extraordinary spacecraft called Voyager were launched to the stars. After what promises to be a detailed and thoroughly dramatic exploration of...

Broca's Brain

By Carl Sagan

Explorers various aspects of several fields of science and examines the role of the intellect in scientific achievement.

Cosmos

By Carl Sagan

This book is about science in its broadest human context, how science and civilization grew up together. It is the story of our long journey of discovery and the forces and individuals who helped...

Shadows of Forgotten Ancestors: A Search for Who We Are

By Carl Sagan, Ann Druyan

The Demon Haunted World

By Carl Sagan

Comet

By Carl Sagan

Explores the fascinating realm of comets answering questions raised by their appearance and delving into the superstitions surrounding them.