Fire crews allowed a fire to burn through brush on the Grand Canyon’s North Rim. They they lost control.

The growth of one wildfire burning on Colorado’s Western Slope has slowed to a crawl, but four others continue to scorch thousands of acres, fire officials said.

The five wildfires burning along Colorado’s western slope have now consumed more than 20,000 acres with little to no containment reported for any of the fires as of July 16. The largest ...