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The Chemistry of Biology: Proteins

ProteinsThe Chemistry of BiologyIntroductionAtomic TheoryChemical Reactions: Ionic, Covalent, and Polar Covalent BondsWaterOrganic ChemistryCarbohydratesLipidsProteinsNucleic AcidsVitamins and…

Peary, Robert Edwin

(Encyclopedia) Peary, Robert EdwinPeary, Robert Edwinpērˈē [key], 1856–1920, American arctic explorer, b. Cresson, Pa. In 1881 he entered the U.S. navy as a civil engineer and for several years…

The Chemistry of Biology: Atomic Theory

Atomic TheoryThe Chemistry of BiologyIntroductionAtomic TheoryChemical Reactions: Ionic, Covalent, and Polar Covalent BondsWaterOrganic ChemistryCarbohydratesLipidsProteinsNucleic AcidsVitamins and…

The Chemistry of Biology: Vitamins and Minerals

Vitamins and MineralsThe Chemistry of BiologyIntroductionAtomic TheoryChemical Reactions: Ionic, Covalent, and Polar Covalent BondsWaterOrganic ChemistryCarbohydratesLipidsProteinsNucleic…

Ross, Sir James Clark

(Encyclopedia) Ross, Sir James Clark, 1800–1862, British polar explorer and rear admiral. In 1818 he accompanied his uncle, Sir John Ross, in search of the Northwest Passage and commanded the Erebus…

Stefansson, Vilhjalmur

(Encyclopedia) Stefansson, VilhjalmurStefansson, Vilhjalmurvĭlˈhyoulmər stĕfˈənsən [key], 1879–1962, Arctic explorer, b. Canada, of Icelandic parents, educated at the Univ. of North Dakota, the State…

Jannes and Jambres

(Encyclopedia) Jannes and JambresJannes and Jambresjănˈēz, jămˈbrēz [key], in the Bible, opponents of Moses. Tradition gave these names to Pharaoh's magicians. One of the Pseudepigrapha bears their…

DK Science: Climate

EQUATORIAL FORESTCLIMATE ZONESHEAT FROM THE SUNMOUNTAIN CLIMATESCOASTAL CLIMATESSEASONSFIND OUT MOREEvery part of Earth has its own climate – the typical pattern of weather over a long period…

Disaster Survival Guide

You never know when disaster will strike. If it does, it’s important to be prepared. Your life—or the lives of others—may depend on knowing how get out of a…

The Caldecott Medal

For the best illustrated book; given by the American Library Association. Randolph Caldecott was a 19th-century British illustrator.1938Animals of the Bible, a Picture Book, by Helen Dean Fish,…