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NPR's Joe Palca reports that researchers think they have figured out the function of the "breast cancer gene." Scientists have found evidence that the gene produces a protein that controls cell growth. And in experiments in the laboratory and in mice, the protein appears to shrink breast cancer tumors, suggesting it may provide a new way to treat breast cancer.

NPR's Richard Gonzales reports on the country's biggest bust of computer chip thieves. More than 500 officers converged on hideouts and arrested 43 people from a high-tech ring that has been victimizing computer-chip businesses in Silicon Valley. The stolen microchips, worth up to $550 each, have been feeding an international gray market in stolen computer parts.

DANIEL SCHORR DISCUSSES U-S REACTION TO THE SHOOTING DOWN OF TWO CIVILIAN PLANES OFF CUBA WITH CONGRESSWOMAN ILEANA ROS-LEHTINEN (ILL-lee-ah-nuh ross-LAY-tin-en), OF SOUTH FLORIDA, AND WAYNE SMITH, A LATIN AMERICAN SPECIALIST AT THE CENTER FOR INTERNATIONAL POLICY IN WASHINGTON.

As the Republican presidential candidates continue to debate their very different stands on such issues as taxes, trade, and abortion, NPR's Brian Naylor explores the question of what makes a Republican. A century ago, the GOP advocated abolitionism, isolationism, and protectionism. Since then, the party has been committed to business and an enemy of big government -- but Republicans disagree about a wide range of social issues.

SUSAN REMARKS ON THE NEWS THIS WEEK THAT CHARLES AND DIANA ARE GETTING A DIVORCE.

Jennifer Ludden (LUH-den) reports from the West African nation of Benin (beh-NIN), on that country's process of democratization. Once among Africa's most repressive countries, Benin has become a model of reform. Tomorrow (Sunday) Benin holds its second multi-party election.

Robert talks with Sherri Rottersman, a young classical

NPR's Elizabeth Arnold talks to Linda about today's campaigning in Arizona by commentator Pat Buchanan. Buchanan is spending the weekend in the state, which will hold its Republican presidential primary next Tuesday, The winner will take 39 delegates to the party convention this summer. Buchanan is in a tight three-way race there with Senator Bob Dole and publisher Steve Forbes, according to public opinion polls.

SCOTT DISCUSSES THE QUICK ELIMINATION OF SADDAM HUSSEIN'S TWO SONS-IN-LAW, MURDERED YESTERDAY IN IRAQ ONLY TWO DAYS AFTER RETURNING FROM THEIR DEFECTION TO JORDAN, WITH JOURNALIST MARIAM SHAHIN IN JORDAN.

Minnesota Public Radio's John Biewen has a profile of a working poor family. Many political leaders now say curing poverty is beyond the ability of government; poor people simply have to go to work. But millions of the poor already work. One in six Americans is poor, or near poor, despite having one or more family members in the workforce. The proportion of workers earning poverty-level wages has grown by 50-percent in the past 13 years.