(Encyclopedia) ferrous sulfate or iron (II) sulfate, chemical compound, FeSO4. It is known as the monohydrate, FeSO4·H2O; the tetrahydrate, FeSO4·4H2O; the pentahydrate, FeSO4·5H2O; and the…
(Encyclopedia) berylberylbĕrˈĭl [key], mineral, a silicate of beryllium and aluminum, Be3Al2Si6O18, extremely hard, occurring in hexagonal crystals that may be of enormous size and are usually white…
(Encyclopedia) Péguy, CharlesPéguy, Charlesshärl pāgēˈ [key], 1873–1914, French poet and writer. Of a poor, working family, he won scholarships and made a brilliant record as a student. He left the…
(Encyclopedia) parakeet or parrakeet, common name for a widespread group of small parrots, native to the Indo-Malayan region and popular as cage birds. Parakeets have long, pointed tails, unlike the…
From Almaden Tower to the Rocky Mountain Institute Boulder Office, these are the ten most eco-friendly buildings of 2008 by Liz Olson Related Links Building Green…
(Encyclopedia) Allende, Isabel, 1942–, Chilean novelist. Since the 1973 coup in which her cousin, President Salvador Allende Gossens, died, Isabel Allende, who is among the most notable contemporary…
We live in a colorful world. In many countries, colors represent various holidays; they are also used to express feelings and enliven language. Find your favorite color and see what it means…
(Encyclopedia) liverwort, any plant of the class Marchantiopsida. Mosses and liverworts together comprise the division Bryophyta, primitive green land plants (see moss; plant); some of the earliest…
(Encyclopedia) Cushing, Frank Hamilton, 1857–1900, American ethnologist, b. North East, Pa. He published his first scientific paper at the age of 17, and at 18 joined the American ethnology bureau at…
