Boulder scientists are launching a landmark study into wildfire smoke's health effects. Then, what's the evidence behind the Trump administration's sagebrush fire break plan. Next, Colorado support a suffragette memorial. Also, recapping the World Cup. Then, Colorado's canals evolve. Next, what Colorado smells like. Finally, an artist's map obsession.

In honor of July 4th, we play encores of our favorite stories about veterans and American history.

After 24 years behind bars, Curtis Brooks was released. Then, in the latest episode of "On Something," the realities of expungement. Next, licensed marijuana consumption spaces are on the way. Also, how BookBar is responding to controversy around drag queen story time. Also, Peter Roper reflects on Pueblo. Finally, Denver band Kiltro plays Chilean music.

This episode of Colorado Matters was recorded live at the Avalon Theatre in downtown Grand Junction. Ryan Warner interviews bestselling Colorado author Peter Heller, whose latest is an outdoors thriller called "The River." Also, a toe-tapping performance by Cousin Curtiss, of tiny Placerville, Colo. He won the Solo On The Slope music contest.

Partisan gerrymandering can’t be disputed in federal court but states can police the practice, as Colorado does. Then, the Keeling Curve Prize for climate solutions. Next, why so many brick homes in Cap Hill? And, a MLB ump honors a 13-year-old ref after parents scuffled at the teen’s game. Then, the 10-year-old who scaled El Cap. Finally, meet Indie 102.3.

While analysts and hometown watch parties alike thought the Colorado candidates did OK at the debate, they also didn’t stand out. Then, Sen. Cory Gardner believes another summit with North Korea would be a waste of time. Next, RTD is having trouble finding repairmen. Also, a master gardener answers your questions.

The Colorado candidates weren't onstage at the first primary debate, but we still got a better idea of how they may perform tonight. Then, how this CU professor is pinpointing the origins of enslaved families. Next, Hispanic Coloradans who didn't know they are Jewish. Also, the status of CDOT's Bustang. Finally, the Denver Pop Festival predated Woodstock.

Denverite reporter David Sachs shares insights from Mayor Michael Hancock's vision for DIA and more. Then, the organization Heroes to Heroes helps veterans overcome moral injuries. Next, the coach of the Colorado Peaches wins on and off the field. Also, mapping Denver's bike routes. Then, opera meets techno with Orbiting Olympia.