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Patriotic Music for Independence Day

The best songs for your 4th of July picnic by Mark Zurlo Related Links Fourth of July by the Numbers Facts on Fireworks History of Fourth of July Celebrations…

Fungal Infections: Fighting Fungus

Fighting FungusFungal InfectionsIntroductionTypes of InfectionFungal Infections of the SkinFighting Fungus As noted earlier in this section, the strength or weakness of the body's immune system is…

Tuberculosis: Introduction

IntroductionTuberculosisIntroductionTuberculosis: Airborne NightmareTreating TBTB Is a Global Peril In an age when we believe that we have the tools to conquer most diseases, the ancient scourge of…

actinium

(Encyclopedia) actiniumactiniumăktĭnˈēəm [key] [Gr.,=like a ray], radioactive chemical element; symbol Ac; at. no. 89; mass number of most stable isotope 227; m.p. about 1,050℃; b.p. 3,200℃±300℃; sp…

Perot, H. Ross

(Encyclopedia) Perot, H. Ross (Henry Ross Perot), 1930–2019, American business executive and political leader, b. Texarkana, Tex., as Henry Ray Perot, grad. Annapolis, 1953. In 1957 he resigned his…

xenon

(Encyclopedia) xenonxenonzēˈnŏn [key] [Gr.,=strange], gaseous chemical element; symbol Xe; at. no. 54; at. wt. 131.293; m.p. −111.9℃; b.p. −107.1℃; density 5.86 grams per liter at STP; valence…

Carver, Raymond

(Encyclopedia) Carver, Raymond, 1938–88, American short-story writer, b. Clatskanie, Oreg. He was raised in the Pacific Northwest, where he often set his sparely written tales of everyday blue-collar…

periodic law

(Encyclopedia) periodic law, statement of a periodic recurrence of chemical and physical properties of the elements when the elements are arranged in order of increasing atomic number. Such an…

cheese

(Encyclopedia) cheese, food known from ancient times and consisting of the curd of milk separated from the whey. The numerous cheeses (often named for their place of origin) depend for their…

Roundup of Recent Science Discoveries, 1997

Was Three Company? Past evidence uncovered in Israel and France has shown that Neanderthals lived on Earth at the same time as modern Homo sapiens. Neanderthals were found to have lived about 34,…