Related Clues:

• Desert that spans 10 countries
• The world’s largest non-polar desert
• Much of Chad and Mali
• The Kalahari, for example
• Gobi or Sahara
• Desert where the Tuareg people live
• Gobi or Taklamakan
• Where Radio 4 guests might listen to their favourite discs?
• Mojave or Kalahari
• Leave barren terrain
• Get a rash possibly going to a very hot dry region
• Fool, say, losing heart where water is scarce
• Roughly one-third of the earth's surface
• Leave course having lost heart
• Gobi or Atacama, for example