Thank you to Wondrium for Supporting PBS. For more information and a trial please go to http://ow.ly/6nrt30smywM Check out PBS Terra! null 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/