(Encyclopedia) plum, common name for a tree of any of many species of the genus Prunus of the family Rosaceae (rose family) and for its fruit, a drupe. The plum is generally cultivated in the…
IsometriesGeometryTransformationsIsometriesDilationsSymmetry The word isometry is used to describe the process of moving a geometric object from one place to another without changing its size or…
Social Security: A Case in PointHey, Big Spender! The Federal BudgetIntroductionRole of Government in a Capitalist EconomyThe Government Share of the EconomySocial Security: A Case in Point Let's…
Running style of an ostrichHow a Tyrannosaurus stood upNo-one has ever seen a dinosaur in action. However, the bones and the joints of fossilized skeletons can give us clues as to how the animals…
NFC Central Minnesota Vikings - It will be difficult if not impossible for the Vikings to have as good a regular season as they did in 1998. The Vikings went 15-1 and looked like…
Migration Some animals live their whole lives in one location. Others migrate, or move from place to place — sometimes over huge distances. Animals migrate for several reasons: to find food or…
R&B and rock 'n' roll musician Born: Feb. 26, 1928Birthplace: New Orleans, Louisiana Born Antoine Domino in New Orleans, Domino learned to play piano as a child, making his first public…
Recent Discoveries: A Saharan Stonehenge Scientists have confirmed that an assembly of huge stone slabs in Egypt's Sahara Desert is the oldest known astronomical alignment of…
Sources: NASA and Massachusetts Institute of Technology. A new tool to help scientists, the media, and the public assess the potential danger of asteroids…
IntroductionThe Economist's ToolboxIntroductionNumbers Please: Economic DataWatch Out!Virtually all aspects of economic activity can be measured, and most of them are. As you've seen, consumer…
