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In using a genetic test to try to prove her Native ancestry, Senator Elizabeth Warren inadvertently stepped into a quagmire. This week, we examine the tensions around DNA and identity. Plus, after Jamal Khashoggi’s death, revisiting the trope of the so-called reformist Saudi royal. And, a look at what we can learn — and how we've tried to learn it — from twins, triplets and other multiple births.

1. Abdullah Al-Arian, [@anhistorian] professor of Middle East History at Georgetown University, on the decades-long trope in American op-ed pages about reformist Saudi royals. Listen.

2. Kim TallBear, [@KimTallBear] professor of Native Studies at the University of Alberta and author of Native American DNA: Tribal Belonging and the False Promise of Genetic Science, on the way "blood" has been used to undermine tribal sovereignty. Listen.

3. Alondra Nelson, [@alondra] president of the Social Science Research Council, professor of sociology at Columbia University and author of The Social Life of DNA: Race, Reparations, and Reconciliation After the Genome, on why DNA testing has been so valuable to African-American communities. Listen.

4. Nancy Segal, [@nlsegal] director of the Twin Studies center at California State University at Fullerton and author of Accidental Brothers: The Story of Twins Exchanged at Birth and the Power of Nature and Nurture, on what we've learned about human nature from the study of twins. Listen.


The Glass House (End Title) by David BergeaudLiquid Spear Waltz by Michael AndrewsSlow Pulse Conga by William PasleyTurn Down the Sound by Adrian YoungeI Wish I Had An Evil Twin by The Magnetic Fields

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