Dan Elliott

Settling ponds at the beginning of operations for discharge water from the Gold King mine at the Gladstone interim water treatment plant above Silverton, CO September 27, 2016.

Robots could descend into old Colorado mines to prevent toxic spills

January 31, 2018 at 10:08 a.m.

Crumbling mine tunnels awash with polluted waters perforate the Colorado mountains, and scientists may one day send robots creeping through the pitch-black passages to study the mysterious currents that sometimes...

Outdoor gear sales slip as millennials drive shift in habits

January 27, 2018 at 8:43 a.m.

Sales of outdoor equipment are slipping as millennials drive changes in U.S. consumer habits by favoring clothes and sporting goods that are less specialized and more versatile, analysts say.

Geysers yes, Ellis Island no: Some U.S. parks open, some not after government shutdown

January 20, 2018 at 8:31 p.m.

Visitors could still ride snowmobiles and ski into Yellowstone National Park Saturday to marvel at the geysers and buffalo herds, despite the federal government shutdown.

One more thing to ask Alexa: Where’s Santa on Christmas Eve?

December 23, 2017 at 11:28 a.m.

Alexa, where's Santa?

Tim Strathmann, a professor at Colorado School of Mines, works with a team to develop a system that would remove highly problematic PFCs chemicals from water on October 20, 2016.

Health study planned after firefighting foam tainted water near Colorado Springs

December 21, 2017 at 5:22 p.m.

Researchers from CU and Mines will test the blood of 200 people whose drinking water was tainted by perfluorinated compounds flowing from firefighting foam used on Peterson AFB

This 2012 file photo shows methadone 10 mg at a Kaiser Permanente office and pharmacy in Castle Rock.

Investigators: Colorado veteran died after getting painkillers

November 30, 2017 at 9:51 p.m.

A Colorado man suffering from chronic pain died two days after he obtained methadone with a prescription from a Veterans Affairs Department doctor, government investigators said Thursday, but they could...

A large Crestone Peak Resources drilling ...

Foes of Obama-era fracking chemical reporting rules ask court to reconsider ruling

November 7, 2017 at 6:47 p.m.

Four states, two industry groups and a Native American tribe say they're not sure whether Obama-era fracking chemical reporting rules are in force while the Trump administration works to undo...

Colorado’s Hickenlooper, Wyoming governor warn Trump against big changes in sage grouse plan

November 1, 2017 at 1:47 p.m.

Two governors are warning the Trump administration against big changes in a plan to protect a ground-dwelling bird across the West, saying it would send a message to states not...

CU study: More evidence links earthquakes to energy waste wells along Colorado-New Mexico border

October 25, 2017 at 2:56 p.m.

Scientists say they have more evidence that an increase in earthquakes on the Colorado-New Mexico border since 2001 has been caused by wells that inject wastewater from oil and gas...

Colorado proposes new rules for oil and gas lines after Firestone blast

October 16, 2017 at 7:32 p.m.

Colorado energy regulators on Monday proposed tighter rules for shutting down oil and gas pipelines after a fatal explosion blamed on natural gas leaking from a line that was thought...

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