Enjoy this sample of my newest Bonus Episode.  The full version (~1 Hour) is on the Calm History-Bonus & Archives Podcast for Silk+ Members.  Summary: I took two prior episodes about rubber (Archive episode #1 & Bonus episode #15) removed their introductions, deleted any promos or ads, and stitched them together.  Now you can enjoy a pure and extended episode about the history of rubber. Become a Silk+ Member (FREE for a limited time) & enjoy 500+ episodes from these 8 Silk+ Podcasts: * Calm History-Bonus & Archives Podcast * Sleep Whispers-Bonus Podcast * Sleep Whispers-Archive Podcast * ASMR University-Bonus Podcast * ASMR Sleep Station-Revived Podcast * Counselor Curt ASMR-Exclusive Podcast  * Sleep With Silk: 8-Hour Nature Sounds * Sleep with Silk: 8-Hour Background Sounds ************************************* Become a Silk+ Member, FREE for a limited time [silkpodcasts.com/plus] FREE alerts of new episodes. Tap “Follow“ on [Apple or Spotify] Shape the future of Calm History [Vote Here – 2023 Survey] Website, Contact, & All My Podcasts [silkpodcasts.com] Bored?  Explore my Favorite Goodies! [silkpodcasts.com/faves]   ************************************ Calm History is part of the Airwave Media podcast network: AirwaveMedia.com Contact [email protected] if you would like to advertise on this podcast.