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DK Science: Reproduction

CROCODILE EGGSROLE REVERSALASEXUAL BUDDINGLIVE YOUNGFERTILIZATIONFIND OUT MOREAnimals reproduce in one of two ways. In asexual reproduction, animals produce young, which are identical to…

Chemistry: Properties of Covalent Compounds

Properties of Covalent CompoundsChemistryGetting to Know Covalent CompoundsWhat Are Covalent Compounds?Formation of Multiple Covalent BondsProperties of Covalent CompoundsWhat's in a Name? Covalent…

The Supreme Court: Switching Parties

Switching PartiesThe Supreme CourtElecting Our LeadersElection Machinery That WorksRemapping DistrictsPaying for CampaignsGetting the Word OutSwitching Parties Last minute party switching to…

Roundup of Recent Science Discoveries, 2004

—By Borgna BrunnerSedna Debuts, Rattling Poor Pluto Artist's rendition of the planetoid Sedna On March 15, 2004, astronomers confirmed the discovery of the most distant object ever identified in…

Algebra: It's a Slippery Slope

It's a Slippery Slope Algebra Graphing Linear Equations Climb Aboard the Coordinate Plane Sketching Line Graphs It's a Slippery Slope Kinky Absolute Value Graphs The slope of a line is a…

A More Perfect Union

Remarks of Senator Barack Obama   Barack Obama Related Links Notable Speeches by African Americans Campaign 2012 Democratic Candidates: Campaign…

lock, canal

(Encyclopedia) lock, canal, stretch of water enclosed by gates, one at each end, built into a canal or river for the purpose of raising or lowering a vessel from one water level to another. A lock…

gaur, in zoology

(Encyclopedia) gaur, large wild ox of Southeast Asia, having a humplike ridge on the back. The gaur, Bos gaurus, is thought to be the largest of the wild cattle; the bulls may measure more than 6 ft…