Apr 4, 2026 · Tabernacle, (“dwelling”), in Jewish history, the portable sanctuary constructed by Moses as a place of worship for the Hebrew tribes during the period of wandering that preceded their arrival in …

Apr 22, 2026 · Gaia hypothesis, model of the Earth in which its living and nonliving parts are viewed as a complex interacting system that can be thought of as a single organism. Developed c. 1972 largely …

Eruption of Thera, devastating Bronze Age eruption of a long-dormant volcano on the Aegean island of Thera, about 70 miles (110 km) north of Crete. Earthquakes, perhaps contemporaneous with the …

Punk, aggressive form of rock music that coalesced into an international (though predominantly Anglo-American) movement in 1975–80. Often politicized and full of energy beneath a sarcastic, hostile …

Minaret, in Islamic religious architecture, the tower from which the faithful are called to prayer five times a day by a muezzin. It is always connected to a mosque but may take on a wide variety of forms …

The most common type of rock exposed on Earth’s surface is sedimentary rock. However, Earth’s crust is formed predominantly of the other two main types of rock, igneous rock and metamorphic rock. …

Mar 13, 2026 · Douglas MacArthur (born January 26, 1880, Little Rock, Arkansas, U.S.—died April 5, 1964, Washington, D.C.) was a U.S. general who commanded the Southwest Pacific Theatre in …

End-Triassic extinction, global extinction event occurring at the end of the Triassic Period that resulted in the demise of some 76 percent of all marine and terrestrial species and about 20 percent of all …

Apr 9, 2026 · Paraffin wax, colourless or white, somewhat translucent, hard wax consisting of a mixture of solid straight-chain hydrocarbons ranging in melting point from about 48° to 66° C (120° to 150° …

Mar 13, 2026 · Magnetic permeability, change in the resultant magnetic field inside a material compared with the magnetizing field in which the given material is located. or the magnetic flux density B …