The Mother Tree – Details, episodes & analysis

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The Mother Tree

Nick Mackenzie

Science

Frequency: 1 episode/1d. Total Eps: 6

The real science of how forests communicate. A six-part, evidence-first deep dive into Suzanne Simard's Mother Tree, the underground Wood Wide Web, the airborne chemistry plants broadcast, the animals caught in the loop, the 2023 scientific reckoning, and the largest living things on Earth. We celebrate what's real, we're honest about what's romanticized, and we treat a live scientific debate as live. © 2026 Selway Solutions LLC · Educational & Institutional Use License (https://history.selwaysolutions.io/index.html#license) · Contact: nick@selwaysolutions.io

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Episode 6 — The Largest Living Things

Episode 6

Sunday, July 12, 2026 • Duration 48:19

The largest living things on Earth — Pando, the Utah aspen clone of ~47,000 stems, and Oregon's "humongous fungus" — and the vast, under-counted carbon that forests and their fungi hold (Hawkins et al., 2023), seen through a forester's eyes. It's where wonder meets the carbon ledger. Famous size and age figures are estimates, and we flag the uncertainty. Sources: peer-reviewed ecology, Forest Service material, and reputable science reporting.

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Episode 5 — The Reckoning

Episode 5

Saturday, July 11, 2026 • Duration 35:57

In 2023 a major review (Karst, Jones and Hoeksema, Nature Ecology & Evolution) argued the field over-read the "Mother Tree" — thin field evidence, positive-result citation bias, and confounded methods — and drew vigorous rebuttals from Simard and colleagues. We don't pick a winner. This is a live, unsettled debate about how good science polices its own wonder. Sources: the peer-reviewed critique, the rebuttals, and reputable science reporting.

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Episode 4 — Animals in the Loop

Episode 4

Friday, July 10, 2026 • Duration 42:05

The signaling web reaches the animal kingdom. Plants that summon parasitic wasps as bodyguards, the chemicals in insect spit (like volicitin) that betray a feeding caterpillar, the evidence that browsing-deer saliva changes a tree's response (Ohse et al., 2017), and mast years that flood a forest with seed to satiate predators. We flag where "the plant manipulates the animal" is shorthand for natural selection, not intent. Sources: peer-reviewed chemical-ecology research.

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Episode 3 — The Airborne Conversation

Episode 3

Thursday, July 9, 2026 • Duration 54:07

That fresh-cut-grass smell is a chemical alarm. The airborne channel of plant communication: green leaf volatiles released when a leaf is torn, terpenoids that summon a herbivore's enemies, and the hormones methyl jasmonate and methyl salicylate that prime defenses. We hold an honest line between plants actively signaling and neighbors simply eavesdropping — and between the lab and the wild forest. Sources: peer-reviewed plant-signaling research and reputable science reporting.

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Episode 2 — The Wood Wide Web

Episode 2

Wednesday, July 8, 2026 • Duration 42:07

How the underground "Wood Wide Web" actually works: trees trading carbon for water and mineral nutrients with mycorrhizal fungi, and a mapped network of Douglas firs linked by Rhizopogon fungi. Then the twist — the "biological market" evidence (Kiers et al., Science, 2011) that the fungi may be self-interested brokers, not selfless couriers. We keep the proven biology separate from the language of "sharing." Sources: peer-reviewed mycorrhizal ecology and reputable science reporting.

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Episode 1 — Finding the Mother Tree

Episode 1

Tuesday, July 7, 2026 • Duration 44:00

Where the "Mother Tree" idea began. Suzanne Simard's radioactive-carbon experiments showed carbon crossing between paper birch and Douglas fir through underground fungal threads (Nature, 1997) — the study that launched the "wood-wide web." We follow the idea from a scientific journal to a TED talk, a memoir, and echoes in The Overstory and Avatar, and we flag the contested claim that old trees deliberately favor their own kin. Sources: peer-reviewed ecology and reputable science reporting.

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The Mother Tree – Details, episodes & analysis

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The Mother Tree – Details, episodes & analysis

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