WHAT ARE MATERIALS’ PROPERTIES? HOW STRONG IS A SPIDERWEB? HOW ARE MATERIALS USED? SYNTHETICSFIND OUT MOREAny substance that is used to make something is a material. Natural materials such as stone…
Trapped in a quagmireFamily feastingTactics of modern huntersJust as modern meat-eating animals such as lions combine forces to pull down animals larger than themselves, many flesh-eating theropods…
U.N.'s Freshmen ClassFascinating facts about Nauru, Kiribati, and Tonga This article was posted on October 5, 1999.Last week, three freshmen nations were admitted to the United Nations. Nauru,…
Human Disorders and Gene TherapyGenetic EngineeringIntroductionFundamentals of Genetic EngineeringCurrent Recombinant Cloning TechnologyDNA Technology ApplicationsHuman Disorders and Gene…
IntroductionMalariaIntroductionA Nasty ParasiteFever and Ague: Malaria's SymptomsA Frustrating, Yet Curable, DiseasePrevention and Cure Malaria is one of the most successful parasites ever known to…
Margaret Mead See also People in the NewsRecent Obituaries Related Links Anthropology Archaeology Some Ancient Civilizations American Indian Archaeological Sites…
(Encyclopedia) knitting, construction of a fabric made of interlocking loops of yarn by means of needles. Knitting, allied in origin to weaving and to the netting and knotting of fishnets and snares…
(Encyclopedia) scurvy, deficiency disorder resulting from a lack of vitamin C (ascorbic acid) in the diet. Scurvy does not occur in most animals because they can synthesize their own vitamin C, but…
(Encyclopedia) ShangShangshäng [key] or Yin, dynasty of China, which ruled, according to traditional dates, from c.1766 b.c. to c.1122 b.c. or, according to some modern scholars, from c.1523 b.c. to…
(Encyclopedia) fertilizer, organic or inorganic material containing one or more of the nutrients—mainly nitrogen, phosphorus, and potassium, and other essential elements required for plant growth.…
