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Activate study mode with book reviews, free essays, course notes, flashcards and other study tools. Millions of students use us to help with their homework assignments.

Find psychology articles, student resources and psychology study guides. Explore psychology definitions and theories. Learn more about the history of psychology from biographies of major thinkers and timelines. Topics covered include personality psyc...

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

International führender Wissenschaftsverlag - Wissenschaft, Technik, Medizin, Architektur, Wirtschaft und Verkehr - Zeitschriften, Bücher und EContent.

The science fiction novels of Sylvia Engdahl, author of Enchantress from the Stars and Children of the Star, plus her views on space colonization.

Popular Mechanics is a service magazine covering a variety of information on home improvement, automotive needs, electronics, computers, telecommunications, outdoors, fitness and science and technology. Popular Mechanics also features product evaluat...

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