Podcast Worksheet: As It Ages

Listening exercise: podcast taken from http://www.scientificamerican.com/podcast/episode.cfm?id=why-paper-yellows-as-it-ages-12-04-17

Ss will practice their listening skills as they fill in the gaps and then look up the words and write a short passage using the vocabulary given. Great for teachers who like to teach English using 60'sec podcast. Hope you like it.