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Why Build Green?

Helping the environment with solar-powered heat and bamboo roofs by Liz Olson Related Links Top Ten Greenest Buildings in the U.S. Earth Day A Warming…

Poisonous Animals

Toxic Terrors Sharp claws and teeth aren't the only weapons animals possess. Many creatures use poisons to attack prey or defend themselves. Some of these…

1990 World History

Lech Walesa (1943– )Archive PhotosHubble Space TelescopeNASA1990World Wide Web debuts, popularizes Internet. Gen. Manuel Noriega surrenders in Panama (Jan. 3). Yugoslav Communists end 45-year…

Earth Day: Energy

Energy: Production & Consumption Find out which countries use and produce the most energy, how much the U.S. consumes, where the largest nuclear power plants in the U.S. are…

Types of Energy

Energy is the power we use for transportation, for heat and light in our homes and for the manufacture of all kinds of products. There are two sources of energy: renewable and nonrenewable energy.…

Cars of the Future Are Here

Sure, cars and trucks are convenient, and most of us couldn't live without them, but they have become very expensive to run and harmful to the environment. Gas prices…

Triple Alliance and Triple Entente

(Encyclopedia) Triple Alliance and Triple EntenteTriple Alliance and Triple Ententeäntäntˈ [key], two international combinations of states that dominated the diplomatic history of Western Europe from…

Tokugawa Ieyasu

founder of the Edo (Tokyo) shogunate Born: 1603Birthplace: present-day Nagoya, Japan The eldest son of Matsudaria Hirotada, Tokugawa Ieyasu was born in 1542 in what is now Aichi prefecture.…