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Dian Fossey is the first known person to be voluntarily contacted by a mountain gorilla (read more)

Featured Article: Kingdom of Jerusalem

The kingdom of Jerusalem and the other Crusader states in 1135.
The Kingdom of Jerusalem was a Christian kingdom established in 1099 C.E. after the First Crusade. It lasted just under two hundred years, from 1099 C.E. until 1291 C.E. when the last remaining outpost, Acre, was captured and defeated by the Mamluks.

At first, the kingdom was little more than a loose collection of towns and cities. However, at its height, the Kingdom roughly encompassed the territory of modern Israel, including the West Bank and the Gaza Strip; it extended from modern Lebanon in the north to the Sinai Desert in the south, and into modern Jordan and Syria in the east. There were also attempts to expand the kingdom into Fatimid Egypt. Its kings also held a certain amount of authority over the other crusader states, Tripoli, Antioch, and Edessa.

Popular Article: J. J. Thomson

Sir Joseph John Thomson
Sir Joseph John “J.J.” Thomson, OM, FRS (December 18, 1856 – August 30, 1940) was a British physicist and Nobel laureate, credited with the discovery of the electron, the isotope, and the invention of the mass spectrometer. He was awarded the 1906 Nobel Prize in Physics for his work on the conduction of electricity in gases.

J.J. Thomson was born in 1856, in Cheetham Hill, Manchester in England, of Scottish parentage. Thomson's father was a successful bookseller, and this no doubt was in part responsible for Thomson's interest in science, as he would have had access to innumerable volumes devoted to the subject.