In 'project of the century', Swiss seek to bury radioactive waste
Storing radioactive waste above ground is a risky business, but the Swiss think they have found the solution: burying spent nuclear fuel deep underground in clay.
Apr 9, 2022
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Energy & Green Tech
Storing radioactive waste above ground is a risky business, but the Swiss think they have found the solution: burying spent nuclear fuel deep underground in clay.
Apr 9, 2022
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36
Engineering
A small energy harvesting device that can transform subtle mechanical vibrations into electrical energy could be used to power wireless sensors and actuators for use in anything from temperature and occupancy monitoring in ...
Oct 29, 2020
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Engineering
About two-fifths of all the water that gets withdrawn from lakes, rivers, and wells in the U.S. is used not for agriculture, drinking, or sanitation, but to cool the power plants that provide electricity from fossil fuels ...
Aug 3, 2021
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Energy & Green Tech
Dye-sensitized solar cells used in low-light conditions could perform more consistently thanks to improved understanding of the role additives play in optimizing electrolytes.
Sep 3, 2020
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Energy & Green Tech
(Tech Xplore)—US Energy Information Administration (EIA) said that in March, and April, U.S. monthly electricity generation from utility-scale renewable sources exceeded nuclear generation for the first time since July ...
Energy & Green Tech
Nuclear power generation can play a crucial role in helping the world reach a key goal of zero carbon emissions by the middle of the century, especially in countries with low wind resources, according to new work in Nature ...
Feb 14, 2022
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Security
Cyber-attacks are rarely out of the headlines. We know state actors, terrorists, and criminals can leverage cyber-means to target the digital infrastructures of our societies. We have also learned that, insofar as our societies ...
Jun 16, 2022
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Energy & Green Tech
Molten salt reactors could become a cornerstone of the future nuclear energy industry, allowing companies to generate carbon-free power in a safe and efficient way. But first, researchers have to better understand how salt ...
Jun 16, 2020
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Engineering
A mock B61-12's strike in the dusty Nevada desert successfully completed the first in a series of flight tests with the U.S. Air Force's newest fighter jet, demonstrating the bomb's first release from an internal bomb bay ...
Nov 23, 2020
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Energy & Green Tech
Chancellor Angela Merkel on Thursday defended her decision to end Germany's use of nuclear power next year, but acknowledged that it will make it harder to reduce greenhouse gas emissions in the short term.
Jul 22, 2021
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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