The Centennial State may become first in the nation to require retailers to warn consumers that burning fossil fuels ...

Colorado’s Democratic Gov. Jared Polis has signed a bill requiring people to pass a background check and complete a ...

Would a sign at the pump telling you about climate and health impacts stop you from buying that next tank of gasoline?

Gas stations across Colorado would have to post a sticker warning drivers that their fuel use contributes to climate change under legislation that narrowly passed the state House on Wednesday.