Shelter

<p>Sisters Cas and Ori are among the first children born on Mars. The <span style=color: rgba(34 34 34 1)>Generation Mars</span> series follows their adventures as they grow up in an environment unlike any in which children have grown up before.</p><p>Each book in the series uses a fundamental element of survival as title and jumping off point: Air Shelter Water Food.</p><p><span style=color: rgba(34 34 34 1)>In book two Shelter an expedition on the surface goes terribly wrong. As conditions go from uncomfortable to desperate it falls to Cas and Ori to save the family. It's a struggle for survival in which they learn the full meaning of shelter.</span></p>