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We have been immersed in a large and prolonged migration of painted lady butterflies. On a small scale, it does not appear to be a migration, for the flight of individual butterflies appears undisciplined and erratic, unlikely to be a purposeful movement to a common destination.

CU Boulder researchers have been awarded $2.9 million from the NSF to create a comprehensive digital archive of native plants in the southern Rocky Mountain region.

Ouray’s amphitheater is formed by walls of rich red sandstone draped with the deep green of several species of conifers, but now, the magnificent amphitheater is sullied with the red of dying white fir, Abies concolor. Another bark beetle epidemic has begun.

I had chosen a dispersed camping site on the Uncompahgre Plateau for its proximity to a small reservoir and a large meadow. But when I drove into the site, I found it was littered, not with refuse, but with tops of subalpine firs.

A team of CU Boulder scientists is working to unlock a longstanding ecological mystery: barren patches of ground in Africa's grasslands known as fairy circles.

Caterpillars have far less bacteria and fungi inhabiting their guts than other organisms, making them an evolutionary oddity in the animal kingdom.

CU Boulder program helps underserved and underrepresented students in the STEM fields gain valuable research experience for graduate school.

This summer, undergraduate students Max Wasser and Grace Kendziorski are spending time hiking in the mountains—and trapping pikas and counting flowers. They are participating in the Research Experiences for Undergraduates program at CU Boulder.

An amplectic pair of treehoppers, Telamona monticola, was on a CU sidewalk beneath a swamp oak tree, Quercus bicolor. I surmised that they tumbled from the tree while delicately adjusting their positions. I collected the treehoppers to photograph them and 7 hours later they were still amplectic.

Professors in theatre, biology and environmental studies team up to focus on creatively communicating climate science through the arts and social sciences.