What happened on April 10, 2005
The Unsung Women in the Race for the Polio Vaccine David M. Oshinsky, David M. Oshinsky is a history professor at the University of Texas at Austin and the author of "Polio: An American Story," published this month by Oxford University Press.
Call Them What You Will, Bloggers Won't Shut Up Rory O'Connor, Rory O'Connor is president of Globalvision, an independent international media company.
Pulitzer Polka Joel Pett, Joel Pett is the Pulitzer Prize-winning editorial cartoonist of the Lexington Herald-Leader. His work also appears in USA Today.
If It Walks Like a Yahoo... Geoffrey Nunberg, Geoffrey Nunberg, a linguist at Stanford University, is the author of "Going Nucular."
Tree Huggers Finally Branch Out Robert Gottlieb and Janice Mazurek, Robert Gottlieb is the director of the Urban and Environmental Policy Institute at Occidental College and author of "Environmentalism Unbound." Janice Mazurek is the author of "Making Microchips."
My Party Is Leaving the Faithful Behind Kevin Starr, Kevin Starr, state librarian emeritus, is professor of history at USC. His latest book is "Coast of Dreams: California on the Edge, 1990-2003," from Alfred A. Knopf.
Is the Filibuster Doomed? Drex Heikes, Drex Heikes is deputy Opinion editor.
The bomb maker who self-destructed Gerald Holton, Gerald Holton is Mallinckrodt research professor of physics and research professor of the history of science at Harvard University and the author of several books, including "Einstein, History, and Other Passions" and "Victory and Vexation in Science."
The big uneasy Richard Eder, Richard Eder, former book critic for The Times, was awarded a Pulitzer Prize for criticism in 1987.
The single that rocked a genre J. Hoberman, J. Hoberman, senior film critic for the Village Voice, is the author of "The Dream Life: Movies, Media, and the Mythology of the Sixties."
Showing us how it's done Richard Schickel, Richard Schickel is a contributing writer to Book Review and a film critic for Time.
The mending Michele Weldon, Michele Weldon teaches at Northwestern University's Medill School of Journalism and is the author of "I Closed My Eyes: Revelations of a Battered Woman."
Ambition as a four-letter word Joseph Epstein, Joseph Epstein is the author of several books, including, most recently, "Snobbery" and "Fabulous Small Jews."
Six of one, but there are others Richard Howard, Richard Howard is a poet and critic who teaches literature in Columbia University's School of the Arts.
Enduring allure of the oasis effect Charles Perry, Charles Perry is a Times staff writer with the Food section.
CALIFORNIA | LOCAL
Treading Thoughtfully Liliana Ibara, Liliana Ibara is a freelance writer based in Chicago.
No Thespians Need Apply James Verini, James Verini last wrote for the magazine about competitive eating.
The Ocularist Tracie White, Tracie White last wrote for the magazine about a student at Harvey Mudd College.