April Fool's Day—Origin and History Chinese New Year Chinese New Year Dates Christmas Easter Father's Day Groundhog Day Halloween Hanukkah Kwanzaa Mardi Gras Martin…
(Encyclopedia) Reed, Walter, 1851–1902, American army surgeon, b. Gloucester co., Va. In 1900 he was sent to Havana as head of an army commission to investigate an outbreak of yellow fever among…
Genes at Work: Mendel's BreakthroughInheritanceIntroductionGenes at Work: Mendel's BreakthroughMeiosis and Sexual ReproductionGametogenesis in Plants and AnimalsRegulation of Gene Expression in…
(Encyclopedia) indicators, acid-base, organic compounds that, in aqueous solution, exhibit color changes indicative of the acidity or basicity of the solution. Common indicators include p-nitrophenol…
It's not all black and white.
The Veil Nebula shows off its brilliant colors.
Blue Planets
Earth, Neptune, and Uranus are all blue because of gases in their atmosphere.
The big and very blue…
(Encyclopedia) sperm oil, liquid wax obtained from the sperm whale, or cachalot, and related marine mammals. It flows readily, is clear, and varies in color from pale yellow to brownish yellow.…
(Encyclopedia) parrot, common name for members of the order Psittaciformes, comprising nearly 400 species of colorful birds, pantropical in distribution, including the parakeets. Parrots have large…
Kids fight. Conflicts arise and live on if you don't have the tools to diffuse the argument. If a conflict is allowed to fester until a grudge forms over a little thing, the bad feelings can…
