The North American Plant with Caffeine

Victoria kicks off this week with a charged up salute to caffeine. Sure, you can find it in Coffee and Tea but there are other plants from around the world with caffeine including a Holly from North America.   Kirk is up next and he shares multiple examples of times humans have unintentionally caused the evolution of species.   Rachel rounds out this week's episode with a Valentine's treat of pearls. Where do they come from? Why do they exist?   Join us weekly for more strange nature. Our supporters on Patreon get every episode ad free!   Support us: patreon.com/strangebynature Email us: [e-mail] Visit us at: strangebynaturepodcast.com