Hummingbirds pollinate claret cup cactus

May 30, 2018

A profound drought has delayed spring in the southwest, and claret cup is one of the first cacti to flower in spring.


Ornithologist wins young investigator’s award

May 23, 2018

The American Ornithological Society has honored Assistant Professor Scott A. Taylor with the 2018 Ned K. Johnson Young Investigator Award.


Uncovering Boulder’s forgotten apple tree legacy

May 22, 2018

CU Boulder students and researchers are combining old-fashioned historical sleuthing with cutting-edge genetic testing and grafting in the hopes of reviving Boulder's apple trees.


Mat saltbush thrives on Mancos Shale

May 4, 2018

Plant communities are usually nicknamed for the most dominant species, such as a ponderosa pine community or a pinyon-juniper woodland. Mat saltbush, also called matscale, communities live on such harsh soils that they are sometimes the only species in in the community.


We live in the dawn of the Anthropocene

April 19, 2018

The Anthropocene epoch is a unit of geological time in which humans exert a dominant influence on climate and the environment, but we have not reached consensus on its starting point.


Following dinosaurs along Colorado's Purgatoire River

April 6, 2018

More than 1,500 fossil footprints allow you to follow dinosaurs as they walked along a lakeshore 150 million years ago. The dinosaur tracksite, the largest in North America, is beside the Purgatoire River in Picketwire Canyon south of La Junta.


The paradox of toxic nectar and pollen in death camas

March 12, 2018

Some species of plant, such as death camas, include toxins in nectar and pollen, presenting a bedeviling paradox. Why attract pollinators and then kill them?


Native Americans domesticated turkeys

Feb. 27, 2018

Analyses of DNA from turkey bones at archeological sites and from modern samples of wild turkeys throughout their range indicate that the domesticated birds in Central Mexico and the domesticated birds from the Southwest are distinctly different.


Tumbleweeds, despised icons of the West

Feb. 9, 2018

Although tumbleweeds were familiar icons of the West, they were not native to the West, nor were they growing around the early western towns when they were established.

Stock photo of hands in the dirt

What lives in your dirt?

Jan. 24, 2018

Compiling the first global atlas of soil bacteria, researchers have identified a group of around 500 key species that are both common and abundant worldwide.