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Several swallowtail butterflies mimic other poisonous butterflies. Here are different forms of the same species; in the center lies a female Papilio polytes that does not mimic other species. Photo by Matt Wood of the University of Chicago

Science Nov 07

A 2-million-year-old ‘supergene’ helps these butterflies mimic their poisonous cousins

By Rashmi Shivni, Teresa Carey

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First Comprehensive Genetic Analysis of Breast Cancer Could Change Treatment

First Comprehensive Genetic Analysis of Breast Cancer Could Change Treatment…

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Q&A: Gene Sequence ‘Bank’ Helps Scientists Decipher H1N1 Flu

Within days of the first swine flu case confirmation in California last month, scientists at the Centers for Disease Control mapped the virus's genetic code and posted the sequence in a publicly available database for other researchers to examine.

By PBS NewsHour

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Watch Dec 16 Marshall Islands: A third of the nation has left for the US
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Read Sep 29 UN panel says the U.S. owes reparations to African-Americans
Watch Dec 15 Nils Lofgren: 50 years of ‘just being a guy in the band’
Read Dec 14 What we know about Maria Butina’s plea agreement

Republican candidate for the Senate Mark Harris speaks to supporters during a volunteer meeting and rally at the Ardmore Auditorium in Winston-Salem, North Carolina, in April. Photo by Chris Keane/Reuters

Politics Dec 16

After fraud probe, new primary may replace GOP candidate

By Emery P. Dalesio, Associated Press

Politics Dec 16

White House digs in on border wall demand, risking shutdown

By Hope Yen, Associated Press

World Dec 16

Sri Lanka’s president reinstates prime minister he sacked

By Krishan Francis, Associated Press

Politics Dec 16

Kushner-linked firm targets richer areas in program for poor

By Jeff Horwitz, Stephen Braun, Associated Press

A nurse at a clinic in Boston gives a child an influenza vaccine injection. Photo by Brian Snyder/Reuters.

Science Dec 16

Flu vaccinations rise sharply in both children and adults

By Helen Branswell, STAT

Politics Dec 16

Giuliani: ‘Over my dead body’ will Mueller interview Trump

By Jonathan Lemire, Associated Press

Politics Dec 16

Loyalty among attributes Mulvaney brings to White House job

By Jill Colvin, The Associated Press, Jonathan Lemire, Lisa Mascaro, Associated Press

World Dec 15

Nations at UN climate talks back universal emissions rules

By Frank Jordans, Associated Press

Bottles of prescription painkiller OxyContin made by Purdue Pharma LP sit on a shelf at a local pharmacy in Provo, Utah. Photo by George Frey/Reuters

Science Dec 15

Purdue’s secret OxyContin papers should be released, appeals court rules

By David Armstrong and Andrew Joseph, STAT

Politics Dec 15

Interior Secretary Zinke resigning, cites ‘vicious’ attacks

By Ellen Knickmeyer, Matthew Brown, Jonathan Lemire, Associated Press

World Dec 15

Australia recognizes west Jerusalem as Israel’s capital

By Associated Press

Politics Dec 15

Trump pushes Congress for new health law after court ruling

By Ricardo Alonso-Zaldivar, Associated Press

Nation Dec 15

Death of 7-year-old on border raises questions

By Colleen Long, Elliot Spagat, Associated Press

Arts Dec 15

A playlist starring Nils Lofgren, with support from Neil Young and Bruce Springsteen

By Tom Casciato

Politics Dec 15

Trump says Interior Secretary Zinke leaving administration

By Jonathan Lemire, Associated Press

Nation Dec 14

Federal judge rules Affordable Care Act unconstitutional

By Associated Press

Health Dec 14

When staying healthy depends on whether you can get a ride

By Laura Santhanam

Public figure Maria Butina (R) attends a meeting of a group of experts, affiliated to the government of Russia, in this undated handout photo obtained by Reuters on July 17, 2018. Press Service of Civic Chamber of the Russian Federation/Handout via Reuters

Politics Dec 14

What we know about Maria Butina’s plea agreement

By Gabriela Martinez

FILE PHOTO: Office of Management and Budget Director Mick Mulvaney attends the daily briefing at the White House in Washington, U.S., July 20, 2017. REUTERS/Carlos Barria/File Photo - RC18B3CC41F0

Politics Dec 14

Trump says budget director Mick Mulvaney will serve as acting chief of staff

By Jonathan Lemire, Jill Colvin, Catherine Lucey, Associated Press

Traders work on the floor of the New York Stock Exchange (NYSE) in New York on December 14, 2018. Photo by Brendan McDermid/Reuters

Economy Dec 14

Stocks plunge on fears of weak global economic growth

By Marley Jay, Associated Press