Why do newspapers turn yellow over time?
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.
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Mike Carruthers | OmniCast Media
BirdNote Daily
BirdNote
Short Wave
NPR
Engines of Our Ingenuity
Houston Public Media
StarTalk Radio
Neil deGrasse Tyson
Real Ghost Stories Online
Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio
The Grave Talks | Haunted, Paranormal & Supernatural
Ghost Stores, Haunted, Paranormal & Supernatural Stories
La Science, CQFD
France Culture
NRC Onbehaarde Apen
NRC
Der KI-Podcast
ARD
Discussão da comunidade