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	Podcast:		BrainStuff
	Episode:		Why do newspapers turn yellow over time?
	Category:		Science & Medicine
	Duration:		00:03:00
	Publish Date:		2012-05-21 19:19:36
	Description:		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.
	Total Play:		0