A renegade team of scientists discovers the truth behind the Oracle of Delphi's mythical powers of second sight...

Of all the stories of life in ancient Greece, few capture the imagination as much as the Oracle of Delphi. Human mistress of the great god Apollo, the Oracle had the power to enter into ecstatic union with him and bring back his prophecies and counsel for all who came seeking answers. Residing in her temple on the sacred slopes of Mount Parnassos in central Greece, she was consulted on matters large and small. Though the air of magic that surrounds her might cast her as a legend, the Oracle did really exist-and her visions caused her to become the single most influential figure in all of ancient Greece.

Eyewitness accounts from Plutarch and others describe temple practices in astonishing detail, claiming that the Oracle, in preparing to commune with Apollo, breathed in vapors rising from the temple floor. Modern scholars have had rigorous debates about the reliability of the material, and in 1892 French archaeologists unearthed the buried temple itself. Their guide was the ancient literature, which proved to be remarkably accurate, with one glaring, baffling exception?the excavators could find no hint of a chasm beneath the temple, no evidence that the rocky ground had brought vapors of any kind. There followed nearly a century of scholarly denouncement. Critics dismissed not only reports of intoxicating fumes but the Oracle herself, claiming the evidence suggested that she and her minions were nothing but pious frauds. Then a Wesleyan geologist named Joelle deBoer and a young archaeologist, John Hale, decided to take up the question once more.

Pulitzer Prize-winning journalist and bestselling author William J. Broad tells a modern-day detective story that blends history and science to describe how a team of scientists, working from subtle clues scattered throughout the ancient literature, as well as from the latest findings in geology, uncovered scientific evidence to explain the Oracle's powers. They discovered that the vapors from the ancient accounts were, in fact, petrochemical fumes containing a hallucinogenic gas, rising through natural faults hidden underneath the temple floor. Into the dramatic account of that groundbreaking discovery Broad weaves the fascinating story of the ancient Oracle, and her surprising power to open a modern debate between science and religion.

"The oracle at Delphi influenced politicians and slaves with her prophecies, yet her life and practices are shrouded in mystery. In a fascinating story that is part detective tale and part science report, Pulitzer Prize — winning New York Times writer Broad unveils the oracle. In order to prepare for her encounter with Apollo, the oracle descended into a chasm near the temple, where she would breathe the holy pneuma. She would then deliver her prophecies in a trance, sometimes foaming at the mouth and sometimes in a frenzy. When the temple was unearthed in the 19th century, archeologists and geologists searched for the mysterious chasm. Broad traces the history of these efforts and the conflicts they produced. By the mid — 20th century, many scientists argued that the chasm never existed. He follows two modern-day Indiana Joneses, geologist Jelle de Boer and archeologist John Hale, as they refute those conclusions by uncovering the chasm and the geological faults that produced hallucinogenic vapors. Broad's lively prose and fast-paced storytelling conduct us on a breathless adventure of religious mystery and scientific discovery — and ends with a surprising consideration of the meaning of the oracle's powers and the existence of 'shadowy worlds... beyond the ken' of science. B&w illus." Publishers Weekly (Copyright Reed Business Information, Inc.)

"With surefooted authority and lyric story-telling, William Broad delivers a stunning manifesto, a clear-eyed exploration of the ways we know that challenges the metaphysics of science itself. The Oracle illuminates, fascinates, and enlightens." Daniel Goleman, Ph. D, author of Emotional Intelligence

"I foresee strong sales for The Oracle. William Broad takes us on an intellectual adventure that illuminates some of our deepest questions, turning a meditation on the ancient past into a penetrating look at science and spirituality in our future. A seductive read, it is a splendid example of how bridges can be erected between the sciences and the humanities." John Horgan, author of Rational Mysticism and Director of the Center for Science Writings at the Stevens Institute of Technology

"I intended just to sample this book, but I found The Oracle so engrossing that I couldn't put it down. Bill Broad's seductive tale is provocatively told with verve and elegance." Owen Gingerich, Professor of Astronomy & History of Science, Harvard-Smithsonian Center for Astrophysics, and author of The Book Nobody Read, Chasing the Revolutions of Nicolaus Copernicus

"Broad combines a colorful, scientific detective story with an important and timely discussion of what science is and what it is not." Alan Lightman, author of Einstein's Dreams, Professor of Humanities at MIT

"Thoughtfully blending geology, archaeology and ancient history, New York Times staffer Broad (The Universe Below, 1997, etc.) shows scientists unraveling one of antiquity's mysteries." Kirkus Reviews

A Pulitzer Prize-winning journalist and bestselling author describes how a team of scientists, working from subtle clues scattered throughout the ancient literature, as well as from the latest findings in geology, uncovered scientific evidence to explain the Oracle of Delphi's powers.