11.   Groves of quaking aspens attract thousands of tourists to northern Arizona in the late summer and early fall as their leaves turn from green to iridescent gold.

12.   How did health care legislation -- widely described as the major social innovation of the decade -- turn from a pretty sure bet into a questionable proposition?

13.   On warm days the cylinders sometimes snap and pop as the contents turn from a solid into a gas and then re-solidify.

14.   Ridden by Chris McCarron, Tiznow was wide into the first turn from the outside in a field of six.

15.   South America is undergoing a social security revolution as millions of workers turn from state pension systems to open privately administered individual retirement accounts.

16.   The film does have its small charms, though, and boasts agreeable enough turns from the ever-brooding Fiennes and Monica Potter as his would-be soulmate.

17.   The only hint of a slide comes on an uphill sharp right turn from a dead stop.

18.   The track, which includes hills and blind spots, was designed by incorporating the best turns from the best tracks around the world, according to Collins.

19.   These chemicals are effective because they sublimate at room temperature, or turn from solid to gas, when placed in a closet.

20.   This road winds through historic Strawberry, turns from pavement to gravel and finds its way to the edge of Fossil Creek Canyon.