In "A Fall of Moondust", time is running out for the passengers and crew of the tourist-cruiser "Selene," incarcerated in a sea of choking lunar dust. On the surface, her rescuers find their resources stretched to the limit by the pitiless and unpredictable conditions of a totally alien environment. In "The Lion of Comarre", in the far-flung future, one city of extraordinary means was built on Earth, Comarre, and it is rumored to still exist. None but a few know of its location and they hold it a secret afraid the knowledge would subvert society. A young man with great prospects and no worries in the world gives them all up to hunt for the fabled city, and what he finds is something mankind has only dreamed of.
Used availability for Arthur C Clarke's Clarke's Universe
March 2006 : USA Paperback
April 2010 : USA, Canada, UK Kindle edition