There are two basic theories about how the universe will end. Neither are pleasant. The first spells out an inward-rushing, squashing-together of all things and the second has everything flying apart and dissipating into nothingness. But recent and startling findings are putting all guesses up for grabs. Listen in as people who get paid to ponder the end of the universe put their best theories on the table. Joining host Robert Lawrence Kuhn are cosmologist Wendy Freedman; Nobel Laureate and physicist Leon Lederman; physicist/cosmologist Andrei Linde; theologian Nancey Murphy and mathematician Frank Tipler.