Beaming signals into space to find ET could potentially be risky for Earth and its inhabitants. So researchers are developing a Richter-like scale to assess the chance that extraterrestrials could detect -- and potentially react to -- such signals.
"A stunning survey of the latest evidence for intelligent life on Mars. Mac Tonnies brings a thoughtful, balanced and highly accessible approach to one of the most fascinating enigmas of our time."
--Herbie Brennan, author of Martian Genesis and The Atlantis Enigma
"Tonnies drops all predetermined opinions about Mars, and asks us to do the same."
--Greg Bishop, author of Project Beta
"I highly recommend the book for anyone interested in the search for extra-terrestrial artifacts, and the political intrigues that invariably accompany it."
--David Jinks, author of The Monkey and the Tetrahredron
"Mac Tonnies goes where NASA fears to tread and he goes first class."
--Peter Gersten, former Director of Citizens Against UFO Secrecy
And don't miss...
(Includes my essay "The Ancients Are Watching.")
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