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 .

Songs:

The Glass House (End Title) by David Bergeaud
Liquid Spear Waltz by Michael Andrews
Slow Pulse Conga by William Pasley
Turn Down the Sound by Adrian Younge
I Wish I Had An Evil Twin by The Magnetic Fields

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