SEATTLE — When President Bush plunged recently into the debate over the teaching of evolution, saying, "both sides

ought to be properly taught," he seemed to be reading from the playbook of the Discovery Institute, the conservative think tank here that is at the helm of this newly volatile frontier in the nation's culture wars.

After toiling in obscurity for nearly a decade, the institute's Center for Science and Culture has emerged in recent months as the ideological and strategic backbone behind the eruption of skirmishes over science in school districts and state capitals across the country.

Financed by some of the same Christian conservatives who helped Bush win the White House, the organization's intellectual core is a scattered group of scholars who for nearly a decade have explored the unorthodox explanation of life's origins known as intelligent design.

"We are in the very initial stages of a scientific revolution," said the center's director, Stephen C. Meyer, 47, a historian and philosopher of science recruited by Discovery after he protested a professor being punished for criticizing Darwin in class. "We want to have an effect on the dominant view of our culture."

For the institute's president, Bruce K. Chapman, intelligent design appealed to his contrarian, futuristic sensibilities — and attracted wealthy, religious philanthropists like Howard and Roberta Ahmanson at a time when his organization was surviving on a shoestring. More student of politics than science geek, Chapman embraced the evolution controversy as the institute's signature issue precisely because of its unpopularity in the establishment.

"When someone says there's one thing you can't talk about, that's what I want to talk about," said Chapman, 64.

Intelligent design challenges Darwin's theory of natural selection by arguing that some organisms are too complex to be explained by evolution alone, pointing to the possibility of supernatural influences. While mutual acceptance of evolution and the existence of God appeals instinctively to a faithful public, intelligent design is shunned as heresy in mainstream universities and science societies as untestable in laboratories.