# 345: Faster Than Rocks! Page: https://stenobird.com/podcast/this-week-in-microbiology-1045713/345-faster-than-rocks Text version: https://stenobird.com/podcast/this-week-in-microbiology-1045713/345-faster-than-rocks.md Podcast: [This Week in Microbiology](https://stenobird.com/podcast/this-week-in-microbiology-1045713) Published: 2025-11-22T08:02:38+00:00 Episode link: https://www.microbe.tv/twim/twim-345/ Audio file: https://traffic.libsyn.com/secure/twimshow/TWiM345.mp3?dest-id=53322 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/this-week-in-microbiology-1045713/episodes/345-faster-than-rocks Duration seconds: 3211 ## Resource TWiM explains a biological mechanism that links sulfur and iron cycling in anoxic environments, and "swashing," a form of surface movement in which bacteria migrate without active propulsion. Hosts: Michael Schmidt , Michele Swanson , and Petra Levin Guest: Mark O. Martin Subscribe to TWiM (free) on Apple Podcasts , RSS , or by email. Links for this episode Sulfur and iron cycling in anoxic environments (Nature) Bacterial surface migration by swashing (J Bacteriol) Become a Patron of TWiM ! Music used on TWiM is by Ronald Jenkees . Send your microbiology questions and comments to twim@microbe.tv ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/this-week-in-microbiology-1045713/episodes/345-faster-than-rocks/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/this-week-in-microbiology-1045713/345-faster-than-rocks.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.