| About_Insects Information about Australian insects from CSIRO Entomology. Includes fact sheets and other educational materials. |
| Australian_Insects_Common_Names List of standard common and scientific names with distribution maps, images, and notes. |
| Biting_Insects__Prevalence_by_Area_and_Season Brief information on small biting pests in North America and their seasonal, habitat, and diurnal prevalence. |
| Bug_Identification An online key to insect identification. |
| Bug_World_-_Tropical_Malaysian_Insects An introduction to Malaysia's tropical insects by Michael KP Yeh. |
| BugBios Cultural entomology, insect macrophotography, educational resources, and links. |
| Bugbios_Entophiles Stunning insect macrophotography from California, Ecuador, and Brazil with informative descriptions. |
| BugPeople Images and notes of insects in the San Francisco Bay Area of California. |
| Butterflies_and_Dragonflies_of_Sri_Lanka Information about butterflies, dragonflies, and other insects in Sri Lanka and their ecology. |
| Cedric\'s_Insects Includes a list and photos of the mantids, beetles, and stick insects he's cared for. |
| Class_Insecta Philip Myers's introduction from the Animal Diversity Web. |
| Compendium_of_Hexapod_Classes_and_Orders Systematic and alphabetic list with detailed information on all the insect orders. From John R. Meyer's North Carolina State University Entomology class site. |
| 3-D_Insects Virtual reality illustrations of various insects and arachnids. |
| Forestry_Images_-_Insects Large collection of imagery related to North American forest insects. Topics include organisms, life stages, eggs, and damage caused. Browse by taxonomic order or by other categories (such as foliage |
| Frequently_Asked_Questions_About_Insects Information about a wide variety of commonly encountered insects found in California, with links to resources and photos. From the University of California. |
| Insect_Identification From Texas A&M Department of Entomology. Includes a field guide to common Texas insects and an image database. |
| Insect_Information Species-specific information sheets from the Bohart Museum of Entomology at UC-Davis. Includes insect keys and glossary. |
| Insects_of_Alberta Photo gallery of insects found in Alberta, Canada by R. Bercha. |
| Insects_of_Russia Information about insects from the former USSR, including type locality, synonyms, range, distribution and variation, taxonomic notes, habitat and biology, similar species, and photos of adults. |
| Iowa_State_Entomology_Image_Gallery Extensive collection of insect images. |
| Nomina_Insecta_Nearctica Checklist of the approximately 90,000 species of insects of North America north of Mexico, subdivided by Order and Family. |
| Pan_Photo Photographs of European and North American insects categorized by activities and by classification. |
| Stein\'s_Virtual_Insectary Images of some common insects in the eastern USA. |
| Thailand\'s_Amazing_Insects Photographs from the forests near Chiang Mai, sounds, articles, edible insects, Thai attitudes to insects, insects in Thai proverbs and postage stamps, links, butterfly checklists, and resources. |
| Gladiators__A_New_Order_of_Insect Scientific American article about the discovery of a new order of insect - Mantophasmatodea. (November, 2002) |
| New_Insect_Order_Found_in_Southern_Africa Description and image of an insect discovered in Namibia that resembles a cross between a stick insect, a mantid, and a grasshopper. (March 28, 2002) |
| Chemical_of_the_Week__Hydrogen Equations for reactions between hydrogen and other substances. |
| ChemicalElements_com__Hydrogen Basic information, atomic structure, and table of isotopes. |
| EnvironmentalChemistry_com__Hydrogen Atomic structure, chemical and physical properties, and table of nuclides. |
| Especiál_Gas_Inc___Hydrogen Numeric data, uses, and general information. |
| Hydrogen Data tables and historic information. |
| Hydrogen_Energies_and_Spectrum The Bohr model for an electron transition in hydrogen between quantized energy levels with different quantum numbers n yields a photon by emission with quantum energy. |
| It\'s_Elemental__Hydrogen Basic physical and historical information. |
| LANL__Hydrogen Brief reference on the element includes discussion of the sources of hydrogen, its current uses, and potential for new energy applications. |
| Lenntech__Hydrogen Physical data, chemical properties, health and environmental effects. |
| Visual_Elements__Hydrogen General and physical information, uses, and key isotopes. |
| Wikipedia__Hydrogen Properties of the element, including its history, applications, and characteristics. |
| ChemicalElements_com__Vanadium Basic information, atomic structure, and isotopes. |
| EnvironmentalChemistry_com__Vanadium Atomic structure, chemical and physical properties, and table of nuclides. |
| It\'s_Elemental__Vanadium Basic physical and historical information. |
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