In this issue:COMMENT
"What's the Big Idea?" by Dorothy Wickenden: The Obama puzzle.THE TALK OF THE TOWN
"Space Dirt" by Ben McGrath: Building robots for Mars exploration in an unlikely place.
"Second Act" by Rebecca Mead: An unlikely ambassador from Africa. ANNALS OF RELIGION
"The New Evangelicals" by Frances FitzGerald: A growing challenge to the religious right.ANNALS OF MEDICINE
"The Itch" by Atul Gawande: A new science of scratching.ON TELEVISION
"Working Girl" by Nancy Franklin: A British take on the world's oldest profession.THE CURRENT CINEMA
"Big Kills" by Anthony Lane: Reviews of Wanted and The Happening.
(P) and ©2008 The New Yorker