Insects might make us recoil in repugnance, but they also manufacture - or make possible in other ways - many of the things we take for granted in our daily lives. When we bite into a shiny apple, listen to the resonant notes of a violin, try on the latest fashions, receive a dental implant, or get a manicure, we are mingling with the by-products of their everyday lives.

Francesca Ekwuyasi’s debut novel tells the interwoven stories of twin sisters, Kehinde and Taiye, and their mother, Kambirinachi. Kambirinachi feels she was born an Ogbanje, a spirit that plagues families with misfortune by dying in childhood to cause its mother misery. She believes that she has made the unnatural choice of staying alive to love her human family and now lives in fear of the consequences of that decision.

There have been many Clayton Thomas-Mullers: The child who played with toy planes as an escape from domestic and sexual abuse, enduring the intergenerational trauma of Canada's residential school system; the angry youngster who defended himself with fists and sharp wit against racism and violence, at school and on the streets of Winnipeg and small-town British Columbia; the tough teenager who, at 17, managed a drug house run by members of his family, and slipped in and out of juvie, operating in a world of violence and pain.

Star, a young survivor of the Sand Creek Massacre, is brought to the Fort Marion prison castle, where he is forced to learn English and practice Christianity by Richard Henry Pratt, an evangelical prison guard who will go on to found the Carlisle Indian Industrial School, an institution dedicated to the eradication of Native history, culture, and identity. A generation later, Star’s son, Charles, is sent to the school, where he is brutalized by the man who was once his father’s jailer. Under Pratt’s harsh treatment, Charles clings to moments he shares with a young fellow student, Opal Viola.

Carl Zimmer investigates one of the biggest questions of all: What is life? The answer seems obvious until you try to seriously answer it. Is the apple sitting on your kitchen counter alive, or is only the apple tree it came from deserving of the word? If we can’t answer that question here on Earth, how will we know when and if we discover alien life on other worlds? The question hangs over some of society’s most charged conflicts - whether a fertilized egg is a living person, for example, and when we ought to declare a person legally dead.