Discusses the composition of the blood and its importance to body function and describes the structure of the heart and its role in pumping the blood through the body.

Explains what jet propulsion is, Newton's third law of motion, the history of jet aviation, and jet plane designs.

Photographs, maps, time lines, and easy-to-follow text describe the events surrounding the 2010 British Petroleum oil spill in the Gulf of Mexico.

Presents a history of the Zuni Indians, discusses the roles of men and women in the society, and describes their social life and customs.

Introduces the periodic table of elements and the basics of chemistry, including what information the periodic table provides about the elements, the role of electrons in chemistry, and how elements combine to make compounds.

Introduces the force of gravity, including how it works and the history of the theory.

Discusses the uses of radioactive substances and the dangers they present, including fallout from nuclear weapons testing and the meltdown of nuclear plants.