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About 6 million years ago, a new mineral analysis suggests, a mighty river zigzagging across the Colorado plateau may have found its way into older gorges, greatly enlarging them to create the West's most spectacular canyon. Still, some geologists aren't sold.

Drinking too much may seem like an essential part of college life for many students. But interventions aimed at getting students to drink less dangerously do work, a study finds. The efforts need to go beyond generic online courses and involve students on a personal level.

Colorado made history when it opened up licensed marijuana retail shops this year. Aside from just legalizing the purchase of smoke-able marijuana, it…

The Path to StatehoodKansas became the 34th state on January 29, 1861. The journey to become a state was long and bloody. The Kansas-Nebraska Act of 1854…

Much of what was in President Obama's fifth State of the Union address was signaled in the days leading into the speech. Even so, there were a few revealing moments.

Scientists know that a small percentage of humans' genes came from Neanderthals. But they were surprised to find that one-fifth of Neanderthal genes are in modern humans living today. That includes genes associated with diseases including Type 2 diabetes, Crohn's disease and lupus.

Workers can't lose money in myRAs, the savings accounts President Obama unveiled in his State of the Union speech. The government would protect the principal and help savings grow a bit faster than inflation.

Drillers pumping oil on the Great Plains are also producing a lot of natural gas. But the state doesn't have the infrastructure to transport or store it, so much of that gas isn't being sold — it's being set on fire.

The secretary of state singled out Ukraine as an example of a growing trend of governments willing to "trample the ambitions" of their people.

Both farmers and food stamps advocates sighed in relief Friday when President Obama signed the long-overdue Agriculture Act of 2014 – the $956-billion…