* Length is the approximate time to complete the lesson, including exercises and videos.
About this training
This lesson is about space debris. Over the last 70 years, more than 20,000 satellites have been launched and we depend on them for Internet, mobile communications etc. At the end of their useful life, they gradually disintegrate and fall to earth. The four minute audio, with full transcript and vocabulary list, introduces new words related to nature, the environment and society. There are three self-study exercises, focusing on prepositions.
Nature & Environment,