In this episode Neelakshi talks to Dr. Sandy Hetherington about the work in plant paleobotany and evolution. They discuss what are plant fossils, how and where they are formed and what they can tell us about plant history today. Sandy focuses on plant root evolution as part of his research and introduces one of the best-preserved plant fossil deposits here in Scotland, called Rhynie chert 

Find out more about Dr. Hetheringtons research here:  https://www.ed.ac.uk/biology/groups/hetherington