Alan Butler

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Books by Alan Butler

They Built the Earth

Then seeded life 3.7 billion years ago - It's time to unlock the message they left

By Alan Butler

Most leading scientists agree that the old idea that life on Earth sprang into existence thanks to some happy accident 3.7 billion years ago is provably wrong. Top astronomers, such as Carl Sagan and the discoverer of DNA, Francis Crick, believe that life must have been deliberately planted here....

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