If Mars once had rivers of water, where did it all go? NASA’s MAVEN mission aims to find out.

As a spacecraft swings by distant a comet, it will attempt to send a lander to the surface.

Amid a backlog, workers roll up their sleeves at Denver's new U.S. Patent and Trademark Office.

Did scientists make a mistake in their recent findings about the Big Bang?

The state doesn't require tracking drug dependency in babies, but estimates point to a sharp increase due to their mothers’ use of drugs during pregnancy.

The number of babies born dependent on drugs like Percocet and Vicodin is growing in Colorado, and withdrawal is traumatic and costly.

At a weekly free screening of the television series "Cosmos", audiences at Boulder’s Fiske Planetarium ponder the meaning of continental drift, the electric motor and the nature of life.

Astronomer Doug Duncan talks about microscopic creatures that can survive in space, the age of the earth and how we really are star dust.

A University of Colorado research project reveals new insight into what causes dust clouds on the moon. It was aboard a NASA spacecraft that crashed into the far side of the moon on Friday.

"Cosmos" is back on television and capturing the imaginations of Coloradans. Doug Duncan, director of Boulder’s Fiske Planetarium, answers Coloradans’ questions about the series and our universe.

One lone tumbleweed is a romantic symbol of the frontier. Thousands of tumbleweeds start to resemble an Alfred Hitchcock movie.

A spokesman for Trade Center construction site, based in Denver, says humans aren't wired to be effective guards – especially at night.

Metro Denver’s collaborative approach to economic development is a radical departure from traditional politics, Brookings Institution fellow Jennifer Bradley says.

What happens when governments take over a movement designed to keep them out? Communities in Colorado are finding out, one bike lane at a time.

Retailers selling apparel licensed by the NFL convert excitement into sales but black-market vendors also cash in by selling Broncos orange with "unofficial" merchandise at roadside stands or online.

Colorado’s United Launch Alliance, which employs more than 1,700 people in the state, faces the end of its monopoly on Air Force launch contracts after the recent success of the SpaceX Falcon9 rocket.