Part 2: Newton's Principia.

The long-awaited second edition of David Barrett's World Christian Encyclopedia.

An anthropologist bonds with a tribe called "InterVarsity Christian Fellowship."

Net music and the backlash against commodification.

A conversation with bioethics lawyer Lori Andrews.

How Japanese and English—and all other languages—follow the same basic principles despite their bewildering variety.

Recovering the pastoral motivation of classical Christian theology.

The divided soul of Nigeria's Nobel laureate.