Relax while you learn about table salt, sea salt, kosher salt, Himalayan Salt, biology of salt, uses of salt for manufacturing, sources of salt, use of salt in religion and war, salt and Christopher Columbus, salt and revolutions, salt and Gandhi, extracting salt from seawater, and mining salt from salt mines.* Become a Silk+ Member & try FREE access to all the Archive & Bonus Episodes of Calm History (& 500+ episodes): https://bit.ly/ch118  Get FREE Cards to share with others: [Glossy Promo Cards] Explore my Favorite Goodies: [Favorite Goodies] Shape the future of this podcast: [Vote Here – 2023 Survey] Feeling expressive about Calm History? If so, feel free to write a review on Apple Podcasts.  Want to be alerted when the newest episode is available?  Just tap “Follow” (it’s FREE!) on Apple, Spotify, or Android. Website & Contact: https://www.silkpodcasts.com/. Sleep Mask with Earphones (15% off with code SILK): https://bit.ly/sw261** Sleep Headband with Headphones (10% off $99+ with code SILK): https://bit.ly/sp212**   *Content adapted, remixed, edited, and produced by Harris from materials in the public domain and from Wikipedia. **Affiliate links for discounted products that help to support the podcast via commissions. Thank you!