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Formation of the Solar System

Our solar system consists of one star (the Sun), eight planets and all their moons, three dwarf planets, and several thousand small solar system objects—…

World War I: Weapons and Technology

Here's a look at the weapons and technology used during the First World War. World War I Mark V-star tank Related Links World War I Battles with the Most Casualties…

Electoral College v. The People

  Who elects the president? by David Johnson Related Links The Electoral College The Conventions Campaign 2016   The presidential…

The Bulldog Ant

An Australian hunter with excellent vision and a venomous sting by Catherine McNiff By Doug Beckers (Flickr) Related Links Bulldog…

Planet Mars: Fact-Finding Activity

Research and provide short answers Directions: Look at the fact pages on Mars and Earth. Then answer the following questions: How long (in years and days) is one Earth year on Mars…

Pacheco, Johnny

(Encyclopedia) Pacheco, Johnny (Juan Azarías Pacheco Knipping), 1935-2021, Dominican-American salsa musician, bandleader, and recording executive, b…

Amin, Idi

(Encyclopedia) Amin, IdiAmin, Idiēˈdē amēnˈ [key], c.1925–2003, Ugandan army officer and dictator. From the small Kakwa ethnic group, he advanced in the Ugandan armed forces from private (1946) to…

López Mateos, Adolfo

(Encyclopedia) López Mateos, AdolfoLópez Mateos, Adolfoäᵺôlˈfō lōˈpās mätāˈōs [key], 1910–69, president of Mexico (1958–64). A lawyer, he became active in the government party. He served as senator (…

Latynina, Larysa Semyonovna

(Encyclopedia) Latynina, Larysa or Larisa Semyonovna, 1934–, Soviet-Ukrainian gymnast, the dominant female gymnast of her era, b. Kherson. She was the first athlete to win nine Olympic gold medals…

Corinth, Isthmus of

(Encyclopedia) Corinth, Isthmus of, c.20 mi (32 km) long and 4–8 mi (6.4–12.9 km) wide, connecting central Greece (Attica and Boeotia) with the Peloponnesus, between the Gulf of Corinth and the…