*Full* | 1-Hour about Rubber: Discovery, Early Uses, Charles Goodyear, & 1910 Visit to a Rubber Plantation (Silk+ Bonus Episode #22) | Learn, Relax, Sleep
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Episode Sponsors & Promos: * Factor Meals (use code calmhistory50 to get 50% off your first box, plus 20% off your next month): https://factormeals.com/calmhistory50 * Alarmy (alarm app):  https://link.alar.my/calm_history * For the Love of History (podcast): https://open.spotify.com/show/6SjwlXC5e8uvPxXE8siyEZ Access over 70+ Ad-Free episodes of Calm History by becoming a Silk+ Member (FREE for a limited time!) and enjoy over 600 total episodes from these relaxing podcasts: * Calm History (70+ episodes) * Sleep Whispers (430+ episodes) * ASMR Sleep Station (50+ episodes) * 1 & 8-Hour Nature Sounds (50+ episodes) * 1 & 8-Hour Background Sounds (30 episodes) * Counselor Curt ASMR (20+ episodes) * ASMR University (10 episodes) ************************************* Become a Silk+ Member for FREE [silkpodcasts.com/plus] To get alerts of new episodes, tap “Follow“ on [Apple or Spotify] Shape the future of Calm History [Vote Now] Rate & review Calm History on [Apple Podcasts] Create a Podcast with My Help: [silkpodcasting.com/create] Website, Contact, & All My Podcasts [silkpodcasts.com] Explore my Favorite Goodies [silkpodcasts.com/faves] Visit the Silk+ Expo [silkpodcasts.com/expo]   ************************************ Calm History is part of the Airwave Media podcast network: AirwaveMedia.com Contact [email protected] if you would like to advertise on this podcast.
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