The sender is a grade one bilingual teacher and she writes that her class is currently learning about organisms.  Berwyn is a suburb in the Chicago metropolitan area. Almost 60 000 people call it home and the population denstiy is almost 2100 people per square kilometre.  According to The Five Ton Life , Berwyn residents are able to live a low carbon footprint lifestyle. The neighbourhoods are walkable and have easy access to grocery stores.