David G. Myers is a professor of psychology at Hope College in Holland, Mich. He has written about the pursuit of happiness and consumerism.

Read about Tenebrae services and their recreation of the emotional aspects of the passion story on the Rev. Ken Collins’ web site.

Michael Stillwater is the founder of Inner Harmony. With his partner, Doris Laesser, he led a group of Americans on a dark retreat in Switzerland in January 2006. He lives in Marin County, Calif.

A 2000 poll from People for the American Way found that 66 percent of respondents say the issue of whether to teach evolution in public schools is too important to leave to individual localities to decide and say they favor a national approach.

Read the Pittsburgh Post-Gazette article on the ruling against ‘intelligent design’ in science class.

Read a New York Times story on the federal judge’s ruling of ‘intelligent design’ as “unconstitutional” to be taught in high school science classes due to it’s connection to “a particular version of christianity.”

Read an Associated Press article about Judge John E. Jones’ decision to ban ‘intelligent design’ from the school’s biology curriculum.

Nancy L. Haigwood is a professor and senior scientist at Oregon Health & Science University in Portland as well as the director of the Oregon National Primate Research Center. She has written about how the use of primates has advanced HIV research.

John P. Gluck is a professor emeritus of psychology at the University of New Mexico, Albuquerque. Originally a comparative psychologist specializing in learning ability of nonhuman primates, he now studies the ethical justification of animal research.