There's an often-heard worry that all this debate over evolution will hurt the Kansas economy. But one niche is doing quite well.

There are books about intelligent design and books about Darwin, Internet blogs, T-shirts, bumper stickers and enough dueling Darwin and anti-Darwin fish to choke a lake. There's even an Evolution Amber Ale, with a label that reads, "Created in 27 days, not 7."

Who says this controversy isn't good for business?

In November, the Kansas Board of Education approved new science standards that cast doubt on the evolution theory. The changes were advocated by proponents of intelligent design, a belief that nature shows evidence of being designed by a creator.

Opponents of the changes -- who include mainstream scientists -- warned that the move would make Kansas a laughingstock and hurt the state's ability to recruit research companies and high-tech professionals.

But for those who sell T-shirts, bumper stickers and books about the controversy, business is good.

At the Third Planet store in Lawrence, the Darwin fish plaques sold off the shelves right about the time the Board of Education cast its vote.

The Darwin fish are parodies of the familiar Christian fish symbol often seen on the backs of cars. The Darwin fish spawned other symbols, including one in which a Christian fish eats the Darwin fish.

People have also snatched up stickers reading, "Darwin Loves You" and "What's Next? Gravity?" said store manager Melissa Padgett.

"Sales went up a lot for sure," Padgett said. "We're getting more in next week. We just got in a batch of Flying Spaghetti Monster stickers," referring to the fake religion created by an Oregon man to spoof the Kansas position.

The controversy has also led many Christians to buy books on the topic, said Kane McEntire at Perfect Peace Christian Lifestyle Store in Wichita.

The store stocks books that explore Christian creation stories and others exploring religious takes on evolution.

"We have a whole book section for it," he said. "We probably have 30 or 40 titles. With the current controversy, it's been really big. Whatever side you're on, it's something that people are very interested in."

For some, the controversy has provided a unique marketing opportunity. "Bone Wars: The Game of Ruthless Paleontology" allows players to assemble cards featuring dinosaur bones into complete skeletons.

The Massachusetts-based manufacturer has offered Kansans a 20 percent discount.

"The object of all of our games is to try to get people more interested in science, and Kansas seemed like it needed some help," said Diane Kelly of Zygote Games.

Wasatch Brewery in Park City, Utah, rechristened its amber ale Evolution Amber Ale. Some lawmakers in Utah want to put intelligent design in that state's school curriculum, and brewery president Greg Schirf said it was too much to ignore.

"With everything going on here in Utah, and with what happened in Kansas, we thought it had national legs, too," Schirf said. "Somebody told me, 'This is just a publicity stunt, isn't it?' And I said, 'Uh, yeah.' It's part antics but it's a clear political statement, too."

The other side also has benefited economically.

John Calvert, director of the Intelligent Design Network, said demand for the group's education materials had skyrocketed since the controversy began. The group sells videos on its Web site, which averaged about one sale a month before the debate. Now, Calvert said, "we're getting probably 30 times that."

Even with the uptick in sales, Calvert said, his group is about more than making money off a few videos. He said that he wants to educate the public about evolution's flaws and that all the controversy and debate is good.

Boning up on science: "The object of all of our games is to try to get people more interested in science, and Kansas seemed like it needed some help," said Diane Kelly of Zygote Games.A Utah brewery exploited the controversy with its Evolution ale. "It's part antics but it's a clear political statement, too," says the brewery's president.