More recent works , such as the two novels Darwin 's Radio and Darwin 's Children stick closely to the known facts of molecular biology of viruses and evolution . These books are about the impact of a strange disease that appears to make evolutionary transitions happen . More recent works , such as the Darwin 's Radio \/ Darwin 's Children pair of novels , which deal with the impact of a strange disease that appears to drive evolutionary transitions , stick closely to the known facts of molecular biology of viruses and evolution .