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DK Science & Technology: Light

WHAT IS LIGHT? HOW DOES LIGHT TRAVEL? WHAT ARE SHADOWS? WHAT MAKES SOME MATERIALS OPAQUE? REFLECTIONREFRACTIONLASERFIND OUT MORELight is a type of energy known as electromagnetic radiation. It is…

Spring Training 1998

For the first time in Major League Baseball history 30 franchises have migrated south to Florida and Arizona to participate in spring training. That's because two new teams, the Tampa Bay…

Carrington, Leonora

(Encyclopedia) Carrington, Leonora, 1917–2011, English-born Mexican surrealist painter, novelist, and eccentric, studied art at Ozenfant Academy, London (1935–38). From a wealthy Anglo-Irish family,…

fish, in zoology

(Encyclopedia) CE5 Anatomy of a ray-finned fish fish, limbless aquatic vertebrate animal with fins and internal gills. Traditionally the living fish have been divided into three class: the…

DK Science: Black Holes

SUPERMASSIVE BLACK HOLESSPAGHETTIFICATIONFIND OUT MOREWhen the biggest stars explode as supernovas, their cores collapse in on themselves under gravity to become black holes. These regions…

Bowling Trivia

Restaurateur Joe Thum created America's first bowling organization on Sept. 9, 1895, when he pulled together representatives of various regional bowling clubs and formed the American Bowling…

1999 Major League Baseball Preview

American LeaguePreseason Picks MVP: Alex Rodriguez, SS, SeattleRookie of the Year: Eric Chavez, 3B, OaklandCy Young: Pedro Martinez, Boston Red SoxA.L. Champion: New York YankeesWild Card:…

Tuberculosis: Tuberculosis: Airborne Nightmare

Tuberculosis: Airborne NightmareTuberculosisIntroductionTuberculosis: Airborne NightmareTreating TBTB Is a Global Peril TB-causing bacteria is passed from person to person through the air when…

Tuberculosis: Tuberculosis: Airborne Nightmare

Tuberculosis: Airborne NightmareTuberculosisIntroductionTuberculosis: Airborne NightmareTreating TBTB Is a Global Peril TB-causing bacteria is passed from person to person through the air when…

Michel, Hartmut

(Encyclopedia) Michel, HartmutMichel, Hartmutmĭkhˈəl [key], 1948–, German biochemist, Ph.D. Univ. of Würzburg, 1977. Michel was the first person to reduce a photosynthetic action center, which is a…