Charlie Brennan

Orange sediment is seen in a creek near California Gulch Road West of Boulder on Oct. 24, 2018. Upper portions of Boulder County's Left Hand Creek linked to an Environmental Protection Agency Superfund site are being investigated by federal and state officials.

Fish kill in Boulder County’s Left Hand Creek is linked to Superfund site

October 26, 2018 at 12:52 p.m.

State and federal officials said Friday they have determined that a release of contaminated water originating from a mine tunnel at the Captain Jack Mill Superfund site in Boulder County...

Possible mine discharge and fish kill in Boulder County’s Left Hand Creek under investigation

October 24, 2018 at 3:41 p.m.

A potential mine discharge and fish kill in the upper portions of Boulder County's Left Hand Creek linked to an Environmental Protection Agency Superfund site is being investigated by federal...

Zoe Donaldson, an assistant professor of behavioral neuroscience at CU, will study prairie voles to see why for the approximately 10 percent of people who experience what is known as "complicated grief" 鈥� deep mourning that can continue for years.

CU Boulder researcher hopes voles hold clues to prolonged grief in humans

October 5, 2018 at 10:32 p.m.

The inability of some people to pull out of a spiral of grieving after suffering an emotional loss is at the heart of a new study being launched at the...

Jack Burns, a professor of astrophysics and radio astronomy at the University of Colorado, is leading the Dark Ages Polarimetry Pathfinder project for NASA.

CU researcher leads lunar observation project

October 1, 2018 at 6:49 p.m.

University of Colorado researchers are planning to put a satellite in orbit around the moon to observe what they call the universe's "dark ages" 鈥� an era just 15 million...

University of Colorado Professor Corrie Detweiler is leading research to once again make antibiotic-resistant "superbugs" vulnerable to treatment.

CU Boulder researcher working to give new life to old drugs fighting superbugs

September 27, 2018 at 1:01 p.m.

A University of Colorado scientist is leading research aimed at making bacteria that have become resistant to some drug treatments vulnerable once again to treatment.

David Bahr shows a tree stump that has been shot so many times that the tree has fallen down near his home in western Boulder County near Nederland, on July 16, 2015.

More than 225K acres of Colorado鈥檚 Arapaho, Roosevelt national forests may close to shooters

September 21, 2018 at 12:58 p.m.

U.S. Forest Service officials this week released the draft decision of a proposed recreational sport shooting management plan that would close about a quarter million acres of the 1.4 million-acre...

Lindasue Smollen, a Boulder resident and attorney, has rented this billboard 鈥� at a cost of about $3,000 for the first month 鈥� to share gun death statistics.

Boulder woman puts gun violence message where thousands can see

September 18, 2018 at 10:42 p.m.

Rush hour commuters northbound on one of the area's most heavily traveled corridors on Tuesday were greeted with a stark political message funded by one Boulder woman who has run...

Anushree Chatterjee is the principal investigator in a genetic disruption strategy developed by University of Colorado Boulder researchers that effectively stymies the evolution of antibiotic-resistant bacteria such as E. coli, giving scientists a crucial leg up in the ongoing battle against deadly superbugs. (

Research led by CU Boulder could block E.coli, other superbugs

September 9, 2018 at 3:43 p.m.

Kryptonite for superbugs could be on the horizon, as a result of research led by University of Colorado researchers that hinders the progress of antibiotic-resistant superbugs such as聽E.coli.

With grit and gratitude, Jamestown rebounds 5 years after flood

September 9, 2018 at 8:32 a.m.

As Jamestown s repair efforts from the wall of water that hit it are nearly completed, residents say the town's resiliency is based on neighbors willingness to help one another.

A Stop Gross Dam Expansion sign is displayed Friday along Baseline Road in Boulder. A coalition of environmental groups has filed a notice of intent to sue to stop the expansion of the reservoir.

Environmental groups file intent to sue over expansion of Boulder County’s Gross Reservoir 鈥� a Denver Water source

August 24, 2018 at 8:35 p.m.

A coalition of environmental groups has filed a notice of intent to sue to stop the expansion of Gross Reservoir, targeting a number of federal agencies as well as Denver...

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