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It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.

The Department of Justice hired a former Jan. 6 defendant who was caught on tape urging rioters to "kill" police. The department calls him a "valued member" of the administration.

The House Jan. 6 committee preps for a primetime hearing. Poll: A majority of Americans blame Trump for Jan. 6 insurrection. The pipeline that brings natural gas from Russia to Germany is to reopen.

The Southern Baptist Convention meets this week in Nashville, bringing to the fore a host of controversial issues that threaten to cause a rift among the faithful.

Newly disclosed evidence revealed an apparent conflict of interest for Biden adviser Anita Dunn, when she consulted for an Illinois politician facing #MeToo related allegations in 2018.

On this week's Colorado Edition, an unlikely musical team-up, a nightmare future for Colorado River users (that's probably you) and a way-outside-the-box…

Environmental regulators have launched an investigation into a heavily trafficked lake below the Cirque of the Towers in the Wind River Range, with an enterococci reading 384 times the safety threshold.

On Friday, first lady Michelle Obama honors the 2017 school counselor of the year, Terri Tchorzynski of the Calhoun Area Career Center in Battle Creek, Mich.

Democratic lawmakers are pressing the e-commerce giant about what it's doing to stop its systems from recommending books and other products with falsehoods about the pandemic and vaccines.

Dr. Demetre Daskalakis is steering the U.S. monkeypox response. A month into the job, he sees signs of success, but there's still more to be done.