Heath, David

With never-before-reported details, an investigative journalist reveals how a small group of scientist overcame countless obstacles to give the world an unprecedented head start when we needed a COVID-19 vaccine.

Discusses the history and structure of the two branches of Congress and how they make laws.

Discusses the duties, powers, checks and balances, Chief Justices, and important decisions of the Supreme Court; and includes a glossary, related addresses and Internet sites, and an index.

Discusses the establishment of the presidency in the U.S., the system of checks and balances it helps maintain, the duties of the president, and a president's average day.

Provides facts about elections in the United States, and discusses the system of elections in a democracy; political parties; national, state, and local elections; and election day activities.

Discusses the history and structure of the two branches of Congress and how they make laws. Includes a glossary, related addresses and Internet sites, and an index.

Describes the position of television production assistant, covering the education and training requirements, duties, salary, and employment outlook.

Introduces the job of a radio announcer, including descriptions of responsibilities and work environment, as well as the necessary training, potential salary, and career possibilities for this work.

Outlines the educational requirements, duties, salary, employment outlook, and possible future positions for hazardous waste technicians.

Outlines the educational requirements, duties, salary, employment outlook, and possible future positions for crime lab technicians.