Geometric questions are frequently expressed in a language of points, lines, planes, curves, and surfaces, but humanity has always been interested in questions of line and form. Cave paintings from L
Mathematical methods are useful in understanding nature. Though many people accept this view without question, it is usually an act of faith. History demonstrates that nature's most fundamental and i
For thousands of years, algebra consisted solely of expanding the list of problem-solving algorithms—a list of procedures similar in concept to the quadratic formula. But much of contemporary a
Peer pressure takes many different forms, including hurtful comments, undue influence by others to buy material items, or pressure to behave in a certain way or engage in a particular activity. Bully
The cultural and territorial clash between Native Americans and European settlers represents a significant and tragic chapter in the history of the United States. Prior to European contact, Native Am
Praise for the previous edition:"This fun-to-read source will add spice for economics and business classes...an excellent index..."—American Reference Books Annual"This volume is worthy of incl
Alcoholism afflicts individuals of all social groups and age levels, although young adults have the greatest risk for addiction to alcohol. According to the National Survey on Drug Use and Health, mo
Praise for the previous edition:"...offer[s] detail-rich discussions...consider for assignment use..."—School Library JournalMars exploration has never been more active, and our understanding o
Praise for the previous editions:"...well written and engagingly contemporary. Recommended..."—Choice"...suitable for high school, public, and academic libraries."—American Reference Book
Praise for the previous edition:"...offer[s] detail-rich discussions...consider for assignment use..."—School Library JournalThe Messenger mission to Mercury opened a new window into the inner
Unlike all the planets closer to the Sun, known since antiquity, the farthest reaches are the discoveries of the modern world. Uranus was discovered in 1781, Neptune in 1846, Pluto in 1930, the Kuipe
The World Health Organization defines environmental health as "those aspects of human health, including quality of life, that are determined by physical, chemical, biological, social, and psychosocia
Research shows that overweight individuals are more likely to suffer from high blood pressure and cholesterol as well as diabetes and other ailments. Proper nutrition and regular exercise can help
Praise for the previous edition:"...clear and concise...broad in scope...belong[s] in any library serving young adults."—School Library JournalAccording to the National Association of Anorexia
Cigarette smoking is the leading cause of preventable deaths in the United States, according to the Centers for Disease Control and Prevention. Smoking is responsible for about 1 in 5 deaths in Ameri
Abuse is a pattern of physical, emotional, verbal, social, or sexual behavior used to control another person. Every year, millions of people suffer from some form of abuse at the hands of friends, re
It seems hard to believe that just over 200 years ago the United States was little more than an extension of the British Empire. Yet the colonies managed to gain independence, develop a new governmen
Places Muslim Americans in the Center of American History and CultureMuslims have long played a central role in American history. Since the colonial period, when an estimated 20,000 African Muslims w
Biotechnology is the manipulation of a living organism to increase its usefulness. Though it is commonly thought of as a modern practice, it actually began when the early farming civilizations began
Physical science and chemistry are two different but closely related fields, and they are also two of the primary areas of physical science. Physics encompasses the study of the world's foundations&#
