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Larry Gelbart Biography

comedy writerBorn: February 25, 1928Died: September 11, 2009 (Beverly Hills, CA) Best Known as: writer Larry Gelbart drew on his mordant wit and astute…

Robert Heath Dennard

Born: 1932Birthplace: Terrell, Tex. One-transistor dynamic random access memory—Dr. Dennard's invention of DRAM, most often called RAM, was a core development in today's computer industry and is…

George Cadbury

manufacturer, social reformerBorn: 9/19/1839Birthplace: Birmingham, England With his brother Richard, he took over his father's failing chocolate business and built it into the highly successful…

DK Nature: Habitats

WHAT IS THE DIFFERENCE BETWEEN A HOME AND A HABITAT? WHAT IS A MICROHABITAT? OCEANSWETLANDSFORESTSGRASSLANDSDESERTSMOUNTAINSPOLAR HABITATSFIND OUT MOREOrganisms are adapted to live in particular…

R. G. Dun

(Robert Graham Dun)merchant, financial services brokerBorn: 1826Birthplace: Chillicothe, Ohio He began his career in Tappan & Douglass, the first mercantile agency in New York City, in 1850,…

David Crosthwait, Jr.

engineer, inventorBorn: 1898Birthplace: Nashville, Tenn. David Crosthwait held numerous patents relating to heat transfer, ventilation, and air conditioning, the areas in which he was considered…

Rare and Deadly Diseases: Legionnaires' Disease

Legionnaires' DiseaseRare and Deadly DiseasesIntroductionHemorrhagic FeversEbola: Africa's Bloody DiseaseMarburgHantavirus: Four Corners, United StatesMad Cow DiseaseCJD: Mad Cow's Human…

Weather: Doing the Twist

Doing the TwistWeatherThere's No Place Like HomeThunderstormsDoing the TwistThe ChaseStaying Safe in a Storm Thunderstorms have a way of going to extremes. If the atmosphere is very unstable and…

Winter Weather Across America

Source: The Federal Emergency Management Agency (FEMA)From the Mid-Atlantic Coast to New England The classic storm in these states is called a Nor'easter. A low-pressure area off the Carolina coast…

Chemistry: Why Do We Need Chemistry?

Why Do We Need Chemistry?ChemistryWhy Study Chemistry?Why Do We Need Chemistry?What Have I Gotten Myself Into?This Stuff Is Really Fun!Who Invented Chemistry?Succeeding Where Others Have Failed "…