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From New World Encyclopedia
New World Encyclopedia integrates facts with values. Written by certified experts.
Featured Article: Sulfate
In inorganic chemistry, a sulfate is a salt of sulfuric acid. The sulfate ion is a polyatomic anion with the empirical formula SO42−. Sulfate salts have diverse applications. For example, magnesium sulfate (or Epsom salts) is used in therapeutic baths; gypsum, the mineral form of hydrated calcium sulfate, is used to produce plaster; and copper sulfate is an algaecide. Some microorganisms that live near deep-sea thermal vents utilize sulfates as electron acceptors.
Popular Article: Noah's Ark
According to the Abrahamic religions, Noah's Ark was a large ship built at God's command to save Noah, his family, and a pair of all animals from the Great Flood. The story is recounted in the Torah's Book of Genesis (Chapters 6-9), with later variations found in the Qur'an and in a number of other sources. These texts state that God decided to destroy humankind due to its wickedness. However, God selected Noah, a man "righteous in his generation," to build an ark and to take on board his family and representatives of all the animals and birds. God's then destroyed the remaining life on earth through a massive flood, saving only those on the ark. Eventually, the waters abated and dry land reappeared. The story ends with God entering into a covenant with Noah and his descendants that is sealed by a rainbow.
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Rabbi Abraham Joshua Heschel marched with Martin Luther King, Jr. in Selma, Alabama (source: Abraham Joshua Heschel)
