Hidden History
An AI reading companion that turns long-form investigative science journalism (like the Smithsonian piece) into narrated audio walk-throughs, timelines, and discussion prompts.
Lifelong learners and high-school civics/science teachers
- Library of narratable Smithsonian/Atlantic/Mother Jones pieces with chapter-level audio summaries
- Interactive timeline view (e.g., 1921 TEL discovery → 1925 worker deaths → 2024 LCRI)
- Classroom-mode discussion prompts and quiz generator aligned to NGSS standards
- Bookmarks and annotations that sync to Notion/Google Docs
Articles like this routinely hit HN front page and get re-shared for years; teachers want drop-in curriculum hooks tied to current events without writing them from scratch.
Multiple funded, launched products validate the article-to-audio niche (ArticleCast iOS app, Speechify podcasts, Playcast.ai), and NotebookLM Audio Overviews has driven viral adoption, but the specific vertical of investigative science journalism narrated for teachers is unproven.ArticleCast | Your Personalized AI Briefing ↗This Google AI Tool Can Turn Your Research Into a 'Podcast' ↗
Crowded: Google's free NotebookLM already does 'deep dive' audio from any source, ArticleCast does personalized article-to-podcast, Speechify/Playcast/FineVoice cover general TTS-to-audio — the core capability is commoditized and only the teacher-curriculum layer is differentiated.Google NotebookLM | AI Research Tool & Thinking Partner ↗Playcast.ai - Turn Articles into Audiobooks ↗Create natural sounding AI podcasts | Speechify ↗
Teachers spend ~$860 out of pocket on supplies but are notoriously price-sensitive ('frugal teaching', free-tier-first); ArticleCast prices free/$10/mo and NotebookLM is free with paid tiers — willingness to pay for this specific wrapper is unproven.2024 National Teacher Survey - AdoptAClassroom.org ↗Budget Teaching: Spend Less, Teach More - The Canadian Teacher ↗
Long-form investigative journalism and curriculum demand persist, but Google and Speechify already own the underlying tech and can add timelines/prompts trivially — niche wrappers risk feature absorption within 1-2 years.NotebookLM Pricing 2026: Free vs Plus vs Pro vs Ultra ↗AI Tools for Educators: 13 Free & Paid Picks for 2026 ↗
All building blocks exist off-the-shelf: TTS (ElevenLabs/Speechify), summarization (any LLM), timeline extraction, and prompt generation — a thin wrapper MVP is buildable in weeks, though editorial curation of source articles is the real cost.Convert Articles to Audio with Lifelike AI Voices in Seconds ↗Discussion Question Generator — Just Think AI ↗