(Encyclopedia) hyperactivity, excessive physical activity of emotional or physiological origin, usually seen in young children; one of the components of attention deficit hyperactivity disorder.
Distributor:WGBH Boston Video NOVA takes a disturbing look at the debilitating and sometimes life-threatening eating disorders that plague thousands of young American girls. Susan Sarandon narrates…
(Encyclopedia) nest, structure for the reception and incubation of the eggs of birds, reptiles, insects, and some fish or for the parturition of mammals, and also for the care of the young during…
(Encyclopedia) mammal, an animal of the highest class of vertebrates, the Mammalia. The female has mammary glands, which secrete milk for the nourishment of the young after birth. In the majority of…
(Encyclopedia) Henty, George Alfred, 1832–1902, English author. Initially a war correspondent, he later wrote boys' adventure tales that were very popular. Henty's books all focused on an ideal of…
(Encyclopedia) Badger, Joseph, 1708–65, American painter, b. Charlestown, Mass. By trade a glazier and house and sign painter, he turned his hand to portraiture. Generally uninspired, his work…
Growth ringsComplete babyStages of growthSome of the most exciting fossil finds over the last fifty years have been those that have something to do with young dinosaurs – their nests, eggs, or…
