Margaret Downey, president of the Freethought Society of Greater
Philadelphia, will talk about why her FFRF chapter erects a "Tree
of Knowledge" every year by a courthouse creche and how officials
have tried to sabotage that solstice observance. Well-known
journalist Hanna Rosin will talk about her cover story in the
December Atlantic: "Did Christianity Cause the Crash? How Preachers
Are Spreading a Gospel of Debt." The hosts will replay Ken
Lonnquist's "O Isthmus Tree."