# 50: The Oldest Evidence for Life? Page: https://stenobird.com/podcast/bedrock-earth-s-earliest-history-4890111/50-the-oldest-evidence-for-life Text version: https://stenobird.com/podcast/bedrock-earth-s-earliest-history-4890111/50-the-oldest-evidence-for-life.md Podcast: [Bedrock: Earth's Earliest History](https://stenobird.com/podcast/bedrock-earth-s-earliest-history-4890111) Published: 2025-11-26T11:00:00+00:00 Episode link: https://bedrock.captivate.fm/episode/50-the-oldest-evidence-for-life Audio file: https://episodes.captivate.fm/episode/496a76f5-0bc1-4a7c-a0e8-4da9582cb518.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/bedrock-earth-s-earliest-history-4890111/episodes/50-the-oldest-evidence-for-life Duration seconds: 2520 ## Resource Donate to support the show- anything is appreciated! Finally, 3.7 billion years ago, we reach some of the strongest evidence for life on Earth yet. It takes a while to find, and it only looks like a few dark crystals, but it's better than anything else we've seen so far. Along the way, we'll meet three scientists who helped define the quest for Earth's oldest fossils, including one of my old bosses. Extra Credit: Sharpen your pencils, spackle some cracks, or thank a mentor in your life. ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/bedrock-earth-s-earliest-history-4890111/episodes/50-the-oldest-evidence-for-life/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/bedrock-earth-s-earliest-history-4890111/50-the-oldest-evidence-for-life.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.