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  1. Encyclopedia Britannica | Britannica

    Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.

  2. Love Canal | History, Environmental Disaster, Toxic Waste,

    Love Canal is a neighborhood in Niagara Falls, New York, U.S., that was the site of the worst environmental disaster involving chemical wastes in U.S. history. After discovery of the …

  3. World War I | Britannica

    World War I saw the debut of the tank and chemical weapons, the widespread use of machine guns and aircraft, improvements in artillery, and the pinnacle of the age of battleships.

  4. World War I | Causes & Effects | Britannica

    A protocol signed at the1925 Geneva Conference for the Supervision of the International Traffic in Arms restricted the use of chemical and biological agents in warfare.

  5. Bhopal disaster | Causes, Effects, Facts, & History | Britannica

    Nov 26, 2025 · The Bhopal disaster was a chemical leak that occurred on December 3, 1984, in the Indian city of Bhopal. It killed an estimated 15,000 to 20,000 people. At the time, it was the …

  6. Sackler family | Brothers, OxyContin, Purdue Pharma, Opioid …

    Nov 18, 2025 · The modern era of the pharmaceutical industry—of isolation and purification of compounds, chemical synthesis, and computer-aided drug design—is considered to have …

  7. Periodic table | Definition, Elements, Groups, Charges, Trends,

    Oct 27, 2025 · The periodic table was created in 1869 and revised in 1871 by Russian chemist Dmitri Mendeleev, who placed elements in columns according to their chemical properties.

  8. Antoine Lavoisier | Biography, Discoveries, & Facts | Britannica

    Nov 14, 2025 · Antoine Lavoisier, prominent French chemist and leading figure in the 18th-century chemical revolution who developed an experimentally based theory of the chemical …

  9. Naphtha | Petroleum, Hydrocarbon, Refining | Britannica

    Nov 18, 2025 · Naphtha, any of various volatile, highly flammable liquid hydrocarbon mixtures used chiefly as solvents and diluents and as raw materials for conversion to gasoline. Naphtha …

  10. Lipid | Definition, Structure, Examples, Functions, Types, & Facts ...

    Dec 1, 2025 · This section describes the structure and physical and chemical properties of fatty acids. It also explains how living organisms obtain fatty acids, both from their diets and through …