Americans used less energy in 2019
Turning those lights off when you leave has a benefit.
Apr 9, 2020
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Energy & Green Tech
Turning those lights off when you leave has a benefit.
Apr 9, 2020
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Engineering
Sandia National Laboratories employees and contractors saw their work culminate in a hypersonic flight test conducted by the U.S. Navy and U.S. Army on March 19 at the Kauai Test Facility in Hawaii.
Mar 25, 2020
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Security
The home confinement of hundreds of millions of people worldwide to halt coronavirus contagion has presented intelligence services with a challenge: monitoring an explosion in internet traffic, above board and not, even as ...
Mar 23, 2020
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Energy & Green Tech
A few years ago, several nuclear reactors in the United States were facing the possibility of unforeseen shutdowns in the wake of disaster at Japan's Fukushima Daiichi power plant. The 2011 accident prompted worldwide scrutiny ...
Mar 12, 2020
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Energy & Green Tech
The United Arab Emirates (UAE) is building the world's largest concentrated solar power plant, capable of generating 700 megawatts. During daylight, solar power will provide cheap electricity, and at night the UAE will use ...
Mar 11, 2020
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Energy & Green Tech
Nine years after a devastating tsunami sparked disaster at the Fukushima Daiichi nuclear plant, clean-up and decommissioning continues at the crippled facility.
Mar 9, 2020
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Energy & Green Tech
Warnings of radiation hotspots in parts of Fukushima that will host the Olympic torch relay and several sporting events have made headlines, but what is the risk for athletes and spectators?
Mar 9, 2020
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Security
While many Australians were preoccupied with panic-buying toilet paper, sales of another commodity encountered a very different sort of crisis.
Mar 6, 2020
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Energy & Green Tech
The world's nuclear watchdog gave its backing Thursday to Japanese plans to release contaminated water from the damaged Fukushima nuclear plant into the ocean.
Feb 27, 2020
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Energy & Green Tech
Since incidents at Three Mile Island, Chernobyl, and Fukushima, many countries have switched from nuclear power to electricity production fired by fossil fuels, despite the environmental consequences of burning fuels such ...
Feb 26, 2020
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A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter; a modern thermonuclear weapon weighing little more than a thousand kilograms can produce an explosion comparable to the detonation of more than a billion kilograms of conventional high explosive. Even small nuclear devices can devastate a city. Nuclear weapons are considered weapons of mass destruction, and their use and control has been a major aspect of international policy since their debut.
In the history of warfare, only two nuclear weapons have been detonated offensively, both near the end of World War II. The first was detonated on the morning of 6 August 1945, when the United States dropped a uranium gun-type device code-named "Little Boy" on the Japanese city of Hiroshima. The second was detonated three days later when the United States dropped a plutonium implosion-type device code-named "Fat Man" on the city of Nagasaki, Japan. These bombings resulted in the immediate deaths of around 120,000 people (mostly civilians) from injuries sustained from the explosion and acute radiation sickness, and even more deaths from long-term effects of ionizing radiation. The use of these weapons was and remains controversial. (See atomic bombings of Hiroshima and Nagasaki for a full discussion.)
Since the Hiroshima and Nagasaki bombings, nuclear weapons have been detonated on over two thousand occasions for testing purposes and demonstration purposes. The only countries known to have detonated nuclear weapons—and that acknowledge possessing such weapons—are (chronologically) the United States, the Soviet Union (succeeded as a nuclear power by Russia), the United Kingdom, France, the People's Republic of China, India, Pakistan, and North Korea. Israel is also widely believed to possess nuclear weapons, though it does not acknowledge having them. (For more information on these states' nuclear programs, as well as other states that formerly possessed nuclear weapons or are suspected of seeking nuclear weapons, see list of states with nuclear weapons.)
This text uses material from Wikipedia, licensed under CC BY-SA