One week after the assassination of Turning Point USA founder and CEO Charlie Kirk, thousands gathered at Colorado State University for a vigil in his honor.

Federal investigators say the July 29 explosion at the Horizon Biofuels plant in Fremont, Nebraska, which killed a worker and his two young daughters, was a preventable tragedy.

An Amtrak conductor is recovering after a passenger train collided with a semitrailer northeast of Denver early Tuesday.

Investigators say a driver is in custody after leading Larimer County deputies on a wrong-way chase along Interstate 25 on Monday...

Colorado House Minority Leader Rose Pugliese has resigned her seat effective immediately.