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DK Society & Beliefs: Zoroastrianism

WHAT MAKES A PARSI? HOW DO PARSIS WORSHIP? FIND OUT MOREZarathustra lived around the 13th century BCE in Iran. He taught that people should choose between the opposing forces of good and evil.…

Recent Science Discoveries, 2000

Ice Age Haute Couture And other recent science discoveries by Otto Johnson More Discoveries IntroductionAntisocial Brain Tissue DeficitNew Orleans…

Homework Center: Writing Research Papers

Homework Center – Writing SkillsWriting Research Papers Transition Words and Phrases Transition words and phrases help establish clear connections between ideas and ensure that…

The World's Most Notorious Despots

The World's Most Notorious Despots by Borgna Brunner The Me Millennium Infoplease's top ten despots of the last thousand years share a few common bonds. Each had a penchant for sadism.…

Gell-Mann, Murray

(Encyclopedia) Gell-Mann, MurrayGell-Mann, Murraygĕlˈ-män [key], 1929–2019, American theoretical physicist, b. New York City, grad. Yale 1948, Ph.D. Massachusetts Institute of Technology, 1951. He…

krypton

(Encyclopedia) kryptonkryptonkrĭpˈtŏn [key] [Gr.,=hidden], gaseous chemical element; symbol Kr; at. no. 36; at. wt. 83.798; m.p. −156.6℃; b.p. −152.3℃; density 3.73 grams per liter at STP; valence…

cesium

(Encyclopedia) cesiumcesiumsēˈzēəm [key] [Lat.,=bluish gray], a metallic chemical element; symbol Cs; at. no. 55; at. wt. 132.90545; m.p. 28.4℃; b.p. 669.3℃; sp. gr. 1.873 at 20℃; valence +1. Cesium…

radon

(Encyclopedia) radonradonrāˈdŏn [key], gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71℃; b.p. −61.8℃; density 9.73 grams per liter at…

seaborgium

(Encyclopedia) seaborgiumseaborgiumsēbôrˈgēəm [key], artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 271; m.p., b.p., sp. gr., and…