Bøker av Hannah Holt

Before a diamond is a gem, it's a common gray rock called graphite. Through an intense trial of heat and pressure, it changes into one of the most valuable stones in the world.Before Tracy Hall was an inventor, he was a boy?born into poverty, bullied by peers, forced to work at an early age. However, through education and experimentation, he became one of the brightest innovators of the twentieth century, eventually building a revolutionary machine that makes diamonds.Told in a unique dual-narrative format, The Diamond and the Boy follows the stories of both natural diamond creation and the life of Tracy Hall, inventor of diamond-making machines. From debut author Hannah Holt?the granddaughter of Tracy Hall?and illustrator Jay Fleck comes this fascinating in-depth portrait of both rock and man.

Packed with information, hilariously but accurately (well...except for the chickens) illustrated, Hannah Holt and Korwin Briggs' A History of Underwear with Professor Chicken is sure to wedge its way into the annals of history-based picture books.From Paleolithic loincloths to Henry VIII's wives wearing underwear on their heads to Mary Walker, a civil war surgeon who was arrested for wearing men's underwear and clothing to better work on patients, this book surveys the vast and fascinating history of our most private clothing.Modeled by chickens, we trace the history of underwear from the very first discovery- a paleolithic nomad whose body was found completely preserved in ice. From there, we look across time and culture in this completely accessible, new take on boring old nonfiction picture books.