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How Stuff Works
HowStuffWorks, a wholly owned subsidiary of Discovery Communications, is the award-winning source of credible, unbiased, and easy-to-understand explanations of how the world actually works. Founded by North Carolina State University Professor Marshall Brain in 1998, the site is now an online resource for millions of people of all ages.
National Institute of Standards and Technology
Welcome to the National Institute of Standards and Technology's web site. NIST, an agency of the U.S. Department of Commerce, was founded in 1901 as the nation's first federal physical science research laboratory.
General Chemistry Online
A searchable database of over 800 common compound names, formulas, structures, and properties.
General Chemistry Online
A searchable database of over 800 common compound names, formulas, structures, and properties.
Chemical Heritage Foundation
The Chemical Heritage Foundation (CHF) fosters an understanding of chemistry’s impact on society.
General Chemistry Case Studies
ChemCases.com is a web-based resource of curriculum supplements for teaching the second semester general chemistry course.Each case study features a number of the basic principles covered in a traditional general chemistry curriculum.
The Wooden Periodic Table Table
This website documents, in great depth, a large collection of chemical elements and examples of their applications, common and uncommon. Click any element tile above and you will find probably more than you ever wanted to know about that element.
Digital Morphology
Digital Morphology, part of the National Science Foundation Digital Libraries Initiative, develops and serves unique 2D and 3D visualizations of the internal and external structure of living and extinct vertebrates, and a growing number of 'invertebrates.' The Digital Morphology library contains nearly a terabyte of imagery of natural history specimens tha
Understanding Evolution
Understanding Evolution is a non-commercial, education website, teaching the science and history of evolutionary biology. This site is here to help you understand what evolution is, how it works, how it factors into your life, how research in evolutionary biology is performed, and how ideas in this area have changed over time.