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Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

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Phys.Org internet news portal provides the latest news on science including: Physics, Space Science, Earth Science, Health and Medicine

GlobalSecurity.org is the leading source for reliable news and security information, directed by John Pike

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Plans, diagrams, pictures, movies and full descriptions dozens of different devices; several High Voltage generators, Tesla Coils, Plasma Globes, Gauss / Coil / Railguns, other electromagnetic weapons and much more!

Occupational Safety and Health Administration - Home

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Learn how to make various homemade explosives, pyrotechnics, rockets and more. pyronfo.com is the largest archive of full books related to explosives.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.