Brainstuff
Why do newspapers turn yellow over time?
- Autor: Vários
- Narrador: Vários
- Editor: Podcast
- Duración: 0:03:00
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Sinopsis
Newspapers turn yellow over time because they contain lignin, a substance in wood that oxidates when exposed to air and light. Learn more about lignin and paper processing in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
