What did Dwight Allison build

Simon's mother Ophelia had called them "dinosaurs in the bunker". What does this tell us about how Ophelia changed as she got older?

What were the mutations of the children of the dust/homo superior? How were they different?

How many years did the nuclear winter last for?

Why did Harris punch Simon in the face?

What is their dog's name?

What were the only things that Bill had to remind him of his past?

What evidence was there that the people outside the bunker had created a beautiful world to live in?

How did Bill survive the Nuclear blast?

When they were on the way to Johnson's farm, Ophelia thought "physically she was with them. But in her mind she was totally alone". What does this mean?

What was considered the greatest gift to people of the future?

Who did Simon describe as the most hideous woman he had ever seen?

Why did Erica and Bill have a child together?