Can even a single-celled organism truly learn? In Episode 70, Jeremy Gunawardena with the Department of Systems Biology at Harvard Medical School talks with us about his replication of an experiment originally conducted over a century ago, which suggested that at least one single-cell organism - t......

In episode 14 we talk with Rafael Núñez from the University of California San Diego about his research into if human understanding of number has developed through biological evolution, or through the evolution of language and culture. His article, "Is There Really an Evolved Capacity for Number?,"...