I speak with Dr. John Tweddle about how a self-measuring garden reveals unseen life through eDNA and sound—and why the real goal is connection, not more data.
S6E4: The Garden That Listens — and Teaches: eDNA, Bioacoustics, and the Secrets of Urban Life with Dr. John Tweddle
November 2, 2025
Recorded in the heart of Tilburg—a Dutch city that has transformed from one of Europe’s hottest heat islands into a showcase of regreening—I met arborist Erwin van Herwijnen of New Urban Standard. We stood in the City Hall square, surrounded by paving stones and a few big trees. To the casual observer, it looked like any other plaza. But Erwin smiled as he gestured underfoot: “Right here, we can handle three and a half million liters of water.”
