Visitors to national parks this summer may notice striking new signs asking people to report any “negative” depictions of historic events or figures they encounter. Advocates for national parks worry that this will lead to censoring less flattering parts of U.S. history. We hear about how this order could impact Colorado’s national park sites, like the Amache internment camp or the Sand Creek Massacre historic site.

Imagine being able to tell the vegetables in your garden when to ripen. Researchers at Colorado State University say they’re developing genetic “toggle switches” for plants that would let people control when and how their crops grow.

The firefighting foam used by airports has long contained toxic “forever chemicals.” Denver International Airport recently completed a huge project to clean up those chemicals from runways and airport firefighting equipment. You can hear why the cleanup was needed – and what might happen next with all that toxic waste,

Fifty years ago, a Boulder County clerk made history when she issued a marriage license to a gay couple, decades before the U.S. Supreme Court legalized same-sex marriage. Those who knew her say she wasn’t trying to be an activist – she just wanted to do the right thing. We’ll hear from a friend and colleague of the late Clela Rorex on In The NoCo.