Much of the opposition to the theory of evolution comes from conservative Christians, but Charles Darwin's birthday will be celebrated this Sunday in churches nationwide.
"Evolution Sunday" will be observed at hundreds of liberal and mainline churches whose pastors have agreed to preach a sermon or hold a class or discussion supporting Darwin's theory.
Darwin Day Celebrations, some prompted by the "intelligent design" controversy, also are planned at atheist and humanist societies and public museums nationwide.
Charles Darwin was born on Feb. 12th, 1809.
More than 400 churches around the country, including about a dozen in Texas, are expected to participate Sunday.