Danny Dunn and the Homework Machine is the third novel in the Danny Dunn series of juvenile science fiction/adventure books written by Raymond Abrashkin and Jay Williams. The book is "about a boy who invents a machine to do his homework for him only to be tricked into doing more with his spare time".The book was first published in 1958 and originally illustrated by Ezra Jack Keats. This is the first novel in the series to feature Irene. == Plot == Professor Bullfinch has created a new design of computer in which the government may be greatly interested. He has to go away and leaves Danny Dunn...

Chita (Russian: Чита, IPA: [tɕɪˈta], Buryat: Шэтэ, romanized: Shete, Mongolian: Чит, romanized: Chit) is a city and the administrative center of Zabaykalsky Krai, Russia, located on the Trans-Siberian Railway route, roughly 900 kilometers (560 mi) east of Irkutsk. == Geography == Chita lies at the confluence of the Chita and Ingoda Rivers, between the Yablonoi Mountains to the west and the Chersky Range to the east. Lake Kenon is located to the west, within the city limits, and the Ivan-Arakhley Lake System is a group of lakes lying about 50 km (31 mi) west of Chita. == History == Pyotr Beketov...

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. The earliest known description of the metal in the West was written in 1540 by Vannoccio Biringuccio. China is the largest producer of antimony and its compounds, with most production coming from the Xikuangshan Mine in Hunan. The industrial methods for refining antimony...