Describes the varieties, habitats, behavior, and physical characteristics of sharks

Ada Twist explores the world with scientific curiosity and endless questions

Examines the life of the physicist Albert Einstein, whose work revolutionized scientific thinking, with an emphasis on his early years

Profiles animal species around the world that have gone extinct within human history, or that are at risk for extinction

Housekeeper Amelia Bedelia visits an art museum, where her confusion leads to surprising results