20 font size. Snowball Earth is the first of three books about the end of our present ice age. The Earth cools down very fast, and life becomes more of a struggle. Plans are made for human survival, in stasis vats on earth and in colonies in space... What will happen to the Waters family? Mum is expecting a baby, and babies can't go into stasis until they are 2 years old. Sheila and Jack the two children aren't sure about what is to happen, and if the plans are good enough for them to return to the Earth many years in the future.