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Chemical reaction     A chemical catastrophe. Thousands of U.S. gulf-war veterans complain about fatigue, memory loss and aching joints. They call it gulf war syndrome. Meanwhile, the use of agent orange in Vietnam continues to afflict Americans and Vietnamese alike. From Chemical weapons http://whyfiles.org/025chem_weap/

Spice of Life     Spices work miracles - in the lab. spicy recipe for good health. A little onion to thin the blood? Garlic, a miracle drug. Brush on some marinade to prevent carcinogens. Extra spicy for natural anti-bacterials. From Spice World http://whyfiles.org/070spice/

Biochemistry     Problem sets and tutorials in the areas of biochemistry including chemistry, large molecules, acids and bases, pH, energy, enzymes, metabolism, photosynthesis and more. The material is mostly presented in the form of quizzes that lead the user to a tutorial if a wrong answer is given. Material presented with text and still images. From The Biology Project: Biochemistry http://www.biology.arizona.edu/biochemistry/biochemistry.html

Cell biology     Introduce yourself to the cell as the fundamental unit of life and the scientific method. Review the cell cycle, learn about the cells that make up all living systems, their organelles, and the differences between living cells and viruses From The Biology Project: Cell Biology http://www.biology.arizona.edu/cell_bio/cell_bio.html

Chemicals and Human Health     Explore the world of renal toxicology, and learn the effect of metals on the kidneys. Discover ways chemicals can affect human health. Review lung anatomy and learn about diseases of the lungs, and environmental tobacco smoke. From The Biology Project: Chemicals & Human Health http://www.biology.arizona.edu/chh/

Mendelian genetics     Tutorials and quizzes to help you learn about the basic principles that govern Mendelian inheritance in plants and animals. From The Biology Project http://www.biology.arizona.edu/mendelian_genetics/mendelian_genetics.html

Molecular biology     Tutorials and problem sets designed to help users with molecular biology topics such as nucleic acid, operator-repressor regulation system, recombinant DNA and more From The Biology Project: Molecular Biology http://www.biology.arizona.edu/molecular_bio/molecular_bio.html

Sweet lure of Chocolate     History of chocolate. Follow the chocolate-making process from its source in the Amazon rain forest to the chocolate factory. Science of chocolate, and the latest research into the possible health effects of its consumption. Why does chocolate make us feel so good? From Exploratorium Magazine: Chocolate http://www.exploratorium.edu/exploring/exploring_chocolate/

The Brain Eater     What causes Mad Cow disease? Is there a new type of infectious agent - a prion - that's responsible? What happens when science faces an unknown pathogen, and what are the implications for public health? Explore these questions and more. Limited content. From NOVA Online | The Brain Eater http://www.pbs.org/wgbh/nova/madcow/