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…
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…
Genes at Work: Mendel's BreakthroughInheritanceIntroductionGenes at Work: Mendel's BreakthroughMeiosis and Sexual ReproductionGametogenesis in Plants and AnimalsRegulation of Gene Expression in…
(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…
(Encyclopedia) Armstrong, Louis (Daniel Louis Armstrong), known as “Satchmo” and “Pops,” 1901–1971, American jazz trumpet virtuoso, singer, and bandleader, b. New Orleans. He learned to play the…
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