Complex sentence: He is also a frequent speaker at literary festivals and universities around the world, who delivered popular TED talks in 2013 and 2014 (ref ted.com ref) and has twice been a Fellow at the World Economic Forum in Davos.
Split into simpler sentences: He is also a frequent speaker at literary festivals and universities around the world. He delivered popular TED talks in 2013 and 2014 and has twice been a Fellow at the World Economic Forum in Davos.