Habitat: Black-billed cuckoo (Coccyzus erythrophthalmus) is vagrant (Western Europe, Azores). In natural range, forest edges, woodland, and riverside thickets. The black-billed cuckoo is a fairly common bird. It may...
The good-looking White-bellied Cuckoo-shrike (Coracina papuensis) is a medium-sized slender bird that resembles Black-faced Cuckoo-shrikes in flight, feeding,...
How did Andrew Carnegie make his fortune? Andrew Carnegie was a famous American iron master, manufacturer, and philanthropist. He was born in Dunfermline, Scotland,...
Thomas Carlyle was a famous Scottish critic, philosopher, and historian. He was born at Ecclefechan, Dumfriesshire, on 4 December 1795. A leading Victorian writer,...
History of Sonar, an Underwater Listening Device
On January 9, 1917, Kaiser Wilhelm II of Germany gave the order for unrestricted submarine warfare to commence....
John Ericsson (1803–1899) was a Swedish-American inventor and engineer, famous for the iron-clad monitor. He was not a man of any invention or unknown...