National Center for Atmospheric Research scientist Danica Lombardozzi keeps a garden of four types of plants she uses to measure exposure to ground-level ozone. "These plants are bioindicators. They're the canary in the coal mine. Their stomata respond to different environmental cues. They let in more of everything in the air." (Nina Riggio, Special to The Colorado Sun)

A tiny garden in Boulder is showing signs of stress from smog. The scientist behind it is thrilled.

Four types of plants growing near the entrance to NCAR are part of a nationwide network of gardens where citizen scientists and climate researchers collect data about the impact of ground-level ozone

Environment Primary category in which blog post is published
Education Primary category in which blog post is published

Coronavirus closures: Denver-area districts cancel in-person classes the rest of the school year

The announcements follow a decision by Gov. Jared Polis to close schools for in-person instruction until at least April 30.