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You've probably seen bryozoans at the beach without even knowing it—some look like floating balls of mucus, while others resemble a bit of crust growing over docks and other hard surfaces. According to a new study, these strange organisms may reveal how colony-forming animals evolved a system for divvying up jobs millions of years ago.

A series of rocks hiding around Colorado's Rocky Mountains hold clues to a frigid period in Earth's past when glaciers several miles thick may have covered the entire planet.

A new ÍÃ×ÓÏÈÉú´«Ã½ÎÄ»¯×÷Æ· study paints a grim picture of how blistering heat, wildfire smoke and other extreme weather events impact Colorado’s jail and prison population.

Utilities face a 10-year deadline to replace lead water pipes under a new Environmental Protection Agency rule. Assistant Professor Julie Korak discusses why it’s necessary and how it will be carried out.

Once abundant, the massive, colorful clam is now locally extinct in many regions, with a critical drop in population due to overfishing and climate change.

A new community science project aims to help the CU Museum of Natural History digitize its collection of bees, some of which were collected in Colorado as far back as the 1870s.

At an event on campus, engineers showed off a laser-based technology that can take a whiff of the air around oil and gas operations, then spot leaking greenhouse gasses in real time.

Fast-growing fires were responsible for nearly 90% of fire-related damages despite being relatively rare in the United States between 2001–20, according to a new ÍÃ×ÓÏÈÉú´«Ã½ÎÄ»¯×÷Æ·-led study.

The new mammal lived in Colorado 70 to 75 million years ago—a time when a vast inland sea covered large portions of the state, and animals like sharks, turtles and giant crocodiles abounded.

Microorganisms growing in landfills, on agricultural land and in wetlands are contributing to skyrocketing levels of atmospheric methane, a potent greenhouse gas, according to new ÍÃ×ÓÏÈÉú´«Ã½ÎÄ»¯×÷Æ· research.