This series, comprising both original and simplified stories, is published at five levels and provides a choice of enjoyable reading material for all learners of English.
This story takes place in England and Brazil, in the 1970s. There were not many fax machines then, and people could not send and receive e-mails.
This story is about scientists and inventors. But at that time, everybody had to use the telephones and the postal services when they wanted to talk to each other, or send each other information.

Reuploaded Thanks to ligia75