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Bacchylides

(Encyclopedia) BacchylidesBacchylidesbăkĭlˈĭdēz [key], fl. c.470 b.c., Greek lyric poet, b. Ceos; nephew of Simonides of Ceos. A contemporary of Pindar, he was patronized by Hiero I. His poetry is…

Stuart, Gilbert

(Encyclopedia) Stuart, Gilbert, 1755–1828, American portrait painter, b. North Kingstown, R.I., best known for his portraits of George Washington. Having shown an early talent for drawing, he became…

Pets in the White House

New First Pets Spot, Ernie, and India go to Washington by Holly Hartman Socks on the podium in the White House briefing room. The former First Cat belongs to Chelsea Clinton—Bill…

DK Science: Engines

TURBINESFIND OUT MOREMany modern machines, from motorbikes to jet aircraft, are powered by engines. An engine is a machine that turns fuel into movement. The fuel is burned to generate heat…

Algebra: Wrestling with Radicals

Wrestling with Radicals Algebra Wrestling with Radicals Introducing the Radical Sign Simplifying Radical Expressions Unleashing Radical Powers Radical Operations Solving Radical Equations…

World-Class Helicopter Records

Selected records. Source: National Aeronautic AssociationGreat Circle Distance Without LandingInternational: 2,213.04 mi; 3,561.55 km.Robert G. Ferry (U.S.) in Hughes YOH-6A helicopter powered by…

Energy and the Earth

Energy is the power that we use for transportation, for heat and light in our homes and other places, and for the manufacture of all kinds of products. It has many other uses, too. The development…

The 2011 Nuclear Crisis in Japan

Acute radiation syndrome, reactor meltdown, and nuclear disaster are all scary terms. Learn about what the terms mean in relation to Japan's 2011 crisis. By Jennie Wood…