John Bliss Knihy

Sam Peterson is your average high school student until he falls through a portal in time and space and lands in the studio of Leonardo da Vinci. This is worse than algebra! Da Vinci was a futurist. He imagined the airplane, the helicopter, submarine, and more--long before anyone else. Who better to design a time machine to get Sam home? Our time-traveler gets hooked on art and science as he gets to know Leonardo. Meanwhile, da Vinci is fascinated by the common items of 21st century life. Yellow highlighters are a revelation! There's plenty of intrigue along the way. Leonardo da Vinci's patron wants to keep the boy from the future, with all his knowledge, right in his court. And since time travel depends on being at the right place at the right moment, a breathless dash ensues with soldiers in hot pursuit. Sam would like to stay with his new friend, and Leonardo would like to see the future. But the artist and man of science knows that each of us must make our world our own. --back cover.

Focusing on the urban experiences of various nationalities, this book examines the migration to America during the nineteenth century. It highlights the challenges and opportunities faced by immigrants as they sought work in the rapidly industrializing cities, showcasing the diverse backgrounds and contributions of these populations to American society.

Nineteenth Century Migration to America will explore the primarily urban experience of many different nationalities, arriving in the USA, to work in rapidly industrialising cities.

Offers insight into the pioneer children's daily life and provides profiles of real migrant children and their later successes.

Discusses the controversy over genetically selected infants, or "designer babies," and outlines the advantages of trait selection and pre-natal screening, as well as the ethical concerns over genetic selection.

This title looks at the business of seafood and how rise in demand has led to massive problems in over fishing and destruction of ecosystems. Are there sustainable fishing models that are profitable?