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Perils of Pollution

Global Warming Many scientists believe human-caused pollution is making the world a warmer place, a process called global warming. Scientists also think…

Understanding the Kurdish Conflict

Facts About the Struggle The Kurdish population stands at about 20-25 million. It is concentrated in the parts of eastern Turkey, Syria, Iran, and Iraq that make up the region known as Kurdistan…

NFL Football Preview - AFC West

AFC West The defending Super Bowl champion Denver Broncos have the same horsepower they had a year ago when they broke the AFC jinx against the Packers in San Diego. They've got the talent, the…

DK Science: Bases

LIMESTONEFIND OUT MOREMany cleaning products, such as soap and oven cleaner, are bases. Bases neutralize (cancel out) acids. Alkalis are bases that dissolve in water. Strong bases, such bleach,…

Chemistry: Properties of Acids and Bases

Properties of Acids and BasesChemistryAcids and BasesWhat Are Acids and Bases?Properties of Acids and BasesThe pH ScaleTitrationsBuffers It's frequently possible to tell acids and bases apart from…

Notable Actors

Isabella Rossellini See also Filmmakers and Directors African-American Actors Asian American Film & Television Personalities Hispanic-American Film, Television, and Theater…

coal

(Encyclopedia) coal, fuel substance of plant origin, largely or almost entirely composed of carbon with varying amounts of mineral matter. Coal is found in beds or seams interstratified with…

Edinburgh

(Encyclopedia) Edinburgh Edinburgh ĕdˈĭnbərə [key], city (2021 pop. 542,599) and council area, royal burgh, capital of…

February 2006

WorldAtomic Energy Board to Report Iran to the UN (Feb. 4): At an emergency meeting of the International Atomic Energy Agency, board members vote to refer Iran to the Security Council, citing its…

DK Science & Technology: Chemistry

WHAT IS A CHEMICAL? WHAT ARE CHEMICAL PROPERTIES? WHY ARE SOME CHEMICALS DANGEROUS? CHEMICAL REACTIONS BIOCHEMISTRY FIND OUT MORE Chemistry is the science of matter. Scientists study…