Mira travels around the world--and into the past--in search of her missing mother, visiting the Wonders of the Modern World. Illustrated with line drawings from Mira's very own sketchbook. A new postcard from her time-traveling mother points Mira to the 16th century Rome. But before she can rescue her mom, she must follow the clues left around the city to find Giordano Bruno, a famous thinker and mathematician, who discovered...