Why Does Caffeine Exist?

Thank you to Wondrium for Supporting PBS. For more information and a trial please go to http://ow.ly/6nrt30smywM Check out PBS Terra! https://www.youtube.com/c/pbsterra Today, billions of people around the world start their day with caffeine. But how and why did the ability to produce this molecule independently evolve in multiple, distantly-related lineages of flowering plants, again and again? ***** PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ***** Produced by Complexly for PBS Digital Studios Super special thanks to the following Patreon patrons for helping make Eons possible: Kyle Brown, Stephen Patterson, Mark Foster, Karen Farrell, Trevor Long, Raphael Haase, daniel blankstein, Roberto Adrian Ramirez Flores, Jason Rostoker, Jonathan Rust, Avery Sanford, Mary Tevington, Bart & Elke van Iersel - De Jong, William Craig II, Tracey, James Dowling-Healey, Irene Wood, Derek Helling, WilCatRhClPPh33, Mark Talbott-Williams, Nomi Alchin, Eric Roberto Rodriguez, Hillary Ryde-Collins, Yu Mei, Dan Ritter, 4th_phase, Jayme Coyle, Albert Folsom, Oscar Amoros Huguet, Patrick Wells, Steven G, Dan Caffee, Stephanie Tan, Nick Ryhajlo, Sean Dennis If you d like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards! Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/