A speculative new paper suggests that advanced "cryptoterrestrials" could be living secretly on Earth or in its near environs, like the moon. This study, which is yet to be peer-reviewed, is the work of researchers at the Harvard Human Flourishing Program and Montana Technological University. What are Cryptoterrestrials? The paper introduces the term "cryptoterrestrials" to refer to an ancient human culture—more technologically advanced than our own—that survived the cataclysms and has lived since in hiding.

The paper introduces the term “cryptoterrestrials” to refer to an ancient human culture—more technologically advanced than our own—that survived the cataclysms and has lived since in hiding.

A speculative new paper suggests that advanced “cryptoterrestrials” could be living secretly on Earth or in its near environs, like the moon.

It suggests the existence of a bizarre group of “intelligent beings concealed in stealth here on Earth (e.g., underground), and/or its near environs (e.g., the moon).”

The study has been accepted for publication in Philosophy and Cosmology.