Let's sleep scientifically this week, with more from a woman of such deep and broad accomplishment that the word "scientist" had to be coined to describe her. This time, colors, molecular heat conduction, what constitutes smells, and why gold is really blue.

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Read "On Molecular and Microscopic Science" at Project Gutenberg: https://www.gutenberg.org/ebooks/55886

Music: "Cosmic Tingles," by Lee Rosevere, licensed under CC BY, https://leerosevere.bandcamp.com

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This is your life - Stille - Eine Predigt mit Chlöisu Burkhalter