The Associated Press

The U.S. House and Senate approved the Colorado River drought contingency plan on Monday.

State officials said this approach lets companies determine how much a site will likely pollute, so regulators can take that into account when they issue air pollution permits later.

Scientists are studying how much water is lost to evaporation at the nation’s two largest reservoirs. There’s no stopping it, but more accurate measurements could lead to better water budgeting on the Colorado River.

There are notable differences in health research findings on tobacco and marijuana, but some governmental officials, researchers and other worry about how to curb cigarette smoking as more states make it legal to smoke pot.

The Democrats’ 2020 presidential primary may feature a historically diverse field of women and minorities, but in some ways it is testing how the party appeals to white men — and whether it can win over President Donald Trump’s base.

The historic church in downtown Charleston has become a place of pilgrimage for some 2020 presidential candidates.

The 54-year-old senator said he plans to have surgery to remove his prostate gland during the congressional spring recess.

The use and sale of marijuana for adults is broadly permitted in 10 states. More than 30 states allow a variety of marijuana-based products for medical purposes.

Sgt. 1st Class Will Lindsay was 33 years old when he died on March 22 in Afghanistan.

The Pueblo depot stores more than 780,000 mustard agent-filled munitions.

Colorado River basin states want congressional approval by April 22 so that Mexico also will contribute water starting in 2020.

DENVER (AP) — Colorado has added autism spectrum disorders to the list of disabling medical conditions eligible for medical marijuana treatment. Gov.

Since Colorado and Washington became the first states to legalize the recreational use of marijuana, eight others have joined them.

Scientists suspect the illness is being caused chiefly by a certain virus that was identified more than 55 years ago and may have mutated to become more dangerous.

The legislation would provide an extra $65 million for roads and schools in the fiscal year that begins July 1.

DENVER — Recent figures show snowpack across Colorado is up by almost half after late-winter, early-spring storms. The U.S.