By overwhelming majorities, human beings have faith in the afterlife. While fewer Americans believe in God, as many as 80% still believe in life after death. Surprisingly, this includes one-in-three agnostics and atheists. According to the Roper Center for Public Opinion the numbers have stayed stable in recent decades.

Does this human refusal to accept that all we have is the here-and-now lead to a dangerous belief in religious fantasies and utopia? Do we chase after myths while ignoring practical steps we could take now to improve life for ourselves and others?

Our guest, Michael Shermer, is the publisher of Skeptic Magazine and the author of the new book "Heavens on Earth: The Scientific Search for the Afterlife, Immortality, and Utopia." Astrophysicist Neil deGrasse Tyson calls him "a beacon of reason in an ocean of irrationality."

Michael walks us through efforts by "techno-optimists" to extend life hundreds of years into the future, from cryonic suspension-- efforts to freeze our brains with all of their neural connects and memories in tact-- to transhumanists, who want to transform us into super-humans.

He is profoundly skeptical of these well-funded efforts, saying that all we have is the present. "Make today count," Michael tells us. "Make every relationship you have count. Make your interactions with community, strangers and society count in just a tiny little bit."

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