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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 leaders of Facebook, Twitter, and Google were not eager to admit fault when it comes to bad information on their platforms, but it's clear Congress is getting closer to regulation.

A nonprofit that supports defendants charged in the Jan. 6, 2021, insurrection is facing scrutiny over its political activity. "The IRS should investigate this case immediately," said one congressman.

The World Economic Forum's Global Gender Gap Report gives high marks to Rwanda in its country-by-country rundown. An all-female debate team offers their perspective.

Data from Johns Hopkins University, which tracks the global spread of the disease, shows more than 1,500 people have died of the disease in the U.S. as of Friday evening.

Ismail Haniyeh, who was the Palestinian group’s political leader, was in the Iranian capital for the inauguration of Iran’s new president. Hamas blamed his assassination on Israel.

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.

House Speaker Nancy Pelosi downplayed freshman Democratic Rep. Rashida Tlaib's expletive-laden call to impeach President Trump, and a top committee leader said it's too early to push for it.

Johnson spent more than three years as superintendent, during a turbulent time when the department was trying to restore the public's faith in police after the shooting death of Laquan McDonald.

The convention kicks off Monday. Will it be as exciting as Donald Trump has promised or will it be ... traditional?