Resultados para "América" en Historia y filosofía

After the Soviet Union proved to the United States that it possessed an operational intercontinental ballistic missile with the launch of Sputnik in October 1957, the world watched anxiously as the two superpowers engaged in a game of nuclear one-upmanship. Amid this rising tension, eccentric physicist Nicholas Christofilos brought forth an outlandish, albeit ingenious, idea to defend the US from a Soviet attack: detonating nuclear warheads in space to create an artificial radiation belt that would fry incoming ICBMs. Known as Operation Argus, this plan is the most secret and riskiest experiment in history, and classified details of these nuclear tests have been long obscured.

Edison and Tesla were arch-enemies with competing visions as to how to electrically empower America. Their hostility played out in the infamous War of the Currents. Radio, television, robots, electric cars, self-driving cars, solar heating, the internet, and the cellphone were on the mind of one or the other of these geniuses. Which one ultimately proved to have the more accurate and enduring vision for the world? Who is in the news today and why? Come and find out the answers.

Although dinosaur fossils were first found in England, a series of dramatic discoveries during the late 1800s turned North America into a world center for vertebrate paleontology. At the same time, the United States emerged as the world’s largest industrial economy, and creatures like tyrannosaurus, brontosaurus, and triceratops became emblems of American capitalism. Large, fierce, and spectacular, American dinosaurs dominated the popular imagination, making front-page headlines and appearing in feature films.

En 1776, les 13 colonies anglaises qui deviendront les 13 premiers États des États-Unis d'Amérique déclaraient leur indépendance, mais l'Angleterre, pour des raisons politiques et économiques, ne leur a octroyé cette indépendance qu'en 1783 après une guerre qui aura duré sept ans.

Why did the US intelligence services fail so spectacularly to know about the Soviet Union's nuclear capabilities following World War II? As Vince Houghton, historian and curator of the International Spy Museum in Washington, DC, shows us, that disastrous failure came just a few years after the Manhattan Project's intelligence team had penetrated the Third Reich and knew every detail of the Nazi's plan for an atomic bomb. What changed and what went wrong?

The Los Angeles Times headline screamed: Rocket Scientist Killed in Pasadena Explosion. The man known as Jack Parsons, a maverick rocketeer who helped transform a derided sci-fi plotline into actuality, was at first mourned as a scientific prodigy. But reporters soon uncovered a more shocking story: Parsons had been a devotee of the city’s occult scene.