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An artistic depiction of the major events in the history of Earth

Geochronology is the science of determining the absolute ages of rocks, fossils, and sediments found on Earth. This field of science relies on a variety of dating methods, including those that are classified under the larger groupings of radiometric dating, luminescence dating, and incremental dating. There is a certain degree of uncertainty inherent within each method used, but the interdisciplinary approach of using several methods helps produce the best results.

Popular Article: Ceramic

Iranian Storage jar decorated with mountain goats circa 3800–3700 B.C.E.

The word ceramic is derived from the Greek word κεραμικος (keramikos), which means "having to do with pottery." The term covers inorganic, nonmetallic materials that have been hardened by baking at a high temperature. Up until the 1950s or so, the most important of these were the traditional clays, made into pottery, dinnerware, bricks, tiles, and the like. Since then, new materials called advanced ceramics have been prepared and are being used for a wide range of applications, including components used by the aerospace, automotive, defense, environmental, fiber-optic, and medical technologies.

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Mahatma Gandhi never received the Nobel Peace Prize, though he was nominated for it five times (source: Nobel Prize)

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