Central Kansas Library System

In the year 241, twelve-year-old Lina trades jobs on Assignment Day to be a Messenger to run to new places in her decaying but beloved city, perhaps even to glimpse Unknown Regions.

"A piece of nuclear fuel the size of your fingertip holds as much energy as 150 gallons (568 L) of oil. In Nuclear Energy, learn how scientists developed this amazing source of energy, how it works, and why it has attracted controversy. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject."--Publisher's description.

"The movement of a rushing river is a valuable energy source. Hydroelectric Energyshows how engineers build and operate dams, turbines, and generators to turn this movement into electricity. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject."--Publisher's description.

From an acclaimed Scientists in the Field author comes the electrifying story of the scientists and engineers who are working to transform ocean waves into electricity in hopes of generating a cleaner, more sustainable power source.

Fuels made from plants such as corn and sugarcane are powering millions of cars on the road today. Biofuels shows how plant-based fuels, such as ethanol and biodiesel, are beginning to replace gasoline in many types of vehicles.

Uses slave narratives, letters, diaries, military orders, and other documents to chronicle the various stages leading to the emancipation of slaves in the United States.

Though Abraham and Mary Todd Lincoln's backgrounds differed considerably, both were intellectuals who shared interests in literature and politics, as well as a great love for each other.

"Marc Favreau documents the Great Depression--a time when Americans from all walks of life fell victim to poverty, insecurity, and fear--and tells the incredible story of how they survived and, ultimately, thrived. This is the story of the Great Depression in the United States, from the sweeping consequences of the market collapse to the more personal stories of individuals and communities caught up in the aftermath. Packed with photographs, primary...