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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 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 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.

Arizona's largest hospital system is nearing ICU bed capacity as coronavirus cases surge. Will Humble, the state's ex-health chief, urges a new executive order requiring Arizonans to wear face masks.

NPR's Steve Inskeep speaks to AP correspondent Sarah El Deeb about how people in Beirut are reacting to street violence that left six people dead.

Despite calls for Joe Biden to choose a Black woman as his vice presidential pick, many progressives are urging him to choose Sen. Elizabeth Warren instead.

Presidential candidate Gov. Chris Christie is afforded around-the-clock protection by state troopers regardless of where he is or the nature of his travels. His spokesman won't say who is paying.

Federal Trade Commission nominee Lina Khan and presidential adviser Tim Wu have advocated for new rules to curb the power of the tech giants.

Last week, BuzzFeed's Editor-in-Chief Ben Smith defended his organization's decision to publish the Russia dossier. He talks to NPR's Michel Martin about how the move changed BuzzFeed's approach to journalism.

The International Court of Justice does not have the power to enforce its own rulings, but it does add to the pressure that Israel feels internationally and domestically to end the war in Gaza.