The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with support from the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the U.S. Army Corps of Engineers. The nuclear physicist J. Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the bombs. The Army component was designated the Manhattan District, as its first headquarters were in Manhattan; the name gradually superseded the official codename, Development of Substitute Materials, for the entire project. The project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but employed nearly 130,000 people at its peak and cost nearly US$2 billion. Over 90 percent of the cost was for building factories and to produce fissile material, with less than 10 percent for development and production of the weapons. Research and production took place at more than 30 sites across the United States, the United Kingdom, and Canada.
Colonization is a trilogy of alternate history books by American writer Harry Turtledove. It is a series continuation of the situation set up in the Worldwar tetralogy, projecting the situation between humanity and The Race nearly twenty years afterward, in the mid-1960s.
The nuclear arms race was an arms race competition for supremacy in nuclear warfare between the United States, the Soviet Union, and their respective allies during the Cold War. During this same period, in addition to the American and Soviet nuclear stockpiles, other countries developed nuclear weapons, though none engaged in warhead production on nearly the same scale as the two superpowers.
Canada has not officially maintained and possessed weapons of mass destruction since 1984 and, as of 1998, has signed treaties repudiating possession of them. Canada ratified the Geneva Protocol in 1930 and the Nuclear Non-proliferation Treaty in 1970.
The Soviet atomic bomb project was the classified research and development program that was authorized by Joseph Stalin in the Soviet Union to develop nuclear weapons during and after World War II.
Homeward Bound (2004) is a science fiction and alternate history novel by Harry Turtledove. It is the eighth and final work in his Worldwar series fictional universe. It follows the events of the Colonization trilogy and gives some closure to the storylines.
The Worldwar series is the fan name given to a series of eight alternate history science fiction novels by Harry Turtledove. Its premise is an alien invasion of Earth during World War II, and includes Turtledove's Worldwar tetralogy, as well as the Colonization trilogy, and the novel Homeward Bound. The series' time span ranges from 1942 to 2031. The early series was nominated for a Sidewise Award for Alternate History in 1996.
Colonization: Second Contact is an alternate history novel by American writer Harry Turtledove. It is the first novel of the Colonization series and the fifth installment in the Worldwar series.
The Axis of Time trilogy is an alternative history series of novels written by Australian journalist and author John Birmingham, from Macmillan Publishing.
Atomic spies or atom spies were people in the United States, the United Kingdom, and Canada who are known to have illicitly given information about nuclear weapons production or design to the Soviet Union during World War II and the early Cold War. Exactly what was given, and whether everyone on the list gave it, are still matters of some scholarly dispute. In some cases, some of the arrested suspects or government witnesses had given strong testimonies or confessions which they recanted later or said were fabricated. Their work constitutes the most publicly well-known and well-documented case of nuclear espionage in the history of nuclear weapons. At the same time, numerous nuclear scientists wanted to share the information with the world scientific community, but this proposal was firmly quashed by the United States government. It is worth noting that many scientists who worked on the Manhattan Project were deeply conflicted about the ethical implications of their work, and some were actively opposed to the use of nuclear weapons.
Worldwar: In the Balance is a 1994 alternate history novel by American writer Harry Turtledove. It is the first novel of the Worldwar tetralogy, as well as the first installment in the extended Worldwar series that includes the Colonization trilogy and the novel Homeward Bound. The plot begins in late 1941, while the Earth is torn apart by World War II. An alien fleet arrives to conquer the planet, forcing the warring nations to make uneasy alliances against the invaders. Meanwhile, the aliens, who refer to themselves as the Race, discover that their enemy is far fiercer and more technologically advanced than expected.
Worldwar: Tilting the Balance is an alternate history novel by the American writer Harry Turtledove. It is the second book in the Worldwar tetralogy and in the extended Worldwar series, which includes the Colonization trilogy and the novel Homeward Bound.
Worldwar: Striking the Balance is an alternate history novel by American writer Harry Turtledove. It is the fourth and final novel of the Worldwar tetralogy and the fourth installment in the extended Worldwar series, which includes the Colonization trilogy and the novel Homeward Bound.
Colonization: Down to Earth is an alternate history and science fiction novel by Harry Turtledove. It is the second novel of the Colonization series, as well as the sixth installment in the extended Worldwar series. British editions are entitled Colonisation: Down to Earth and are the second of the Colonisation series.
Colonization: Aftershocks is an alternate history and science fiction novel by Harry Turtledove. It is the third and final novel of the Colonization series and the seventh installment in the extended Worldwar series.
The Sky People is an alternate history science fiction novel by American writer S. M. Stirling. It was first published by Tor Books in hardcover in November 2006, with a book club edition co-published with the Science Fiction Book Club following in December of the same year. Tor issued paperback, ebook, and trade paperback editions in October 2007, April 2010, and May 2010 respectively. Audiobook editions were published by Tantor Media in January 2007.
George Abramovich Koval was an American engineer who acted as a Soviet intelligence officer for the Soviet atomic bomb project. Koval's infiltration of the Manhattan Project as a GRU agent reduced the time it took for the Soviet Union to develop nuclear weapons.
Switzerland made detailed plans to acquire and test nuclear weapons during the Cold War. Less than two weeks after the nuclear bombings of Hiroshima and Nagasaki, the Swiss government started studying the possibility of building nuclear weapons, and continued its military nuclear program for 43 years until 1988. It has since signed and ratified the Treaty on the Non-Proliferation of Nuclear Weapons. Switzerland never possessed biological weapons, but did have a program of the Swiss Army high command to develop and test chemical weapons.
Chemical weapons have been a part of warfare in most societies, although their use has been particularly controversial since the 20th century.
