Energy & Green Tech
As policymakers around the world aim to cut carbon emissions and meet climate goals, new research points to a critical group whose opinions could help to shape energy planning for the better: the consumers.
Jul 29, 2022
1
42
Machine learning & AI
Computers can be trained to better detect distant nuclear detonations, chemical blasts and volcano eruptions by learning from artificial explosion signals, according to a new method devised by a University of Alaska Fairbanks ...
Jul 22, 2022
0
83
Engineering
A curious thing happened when MIT researchers Adam Vernon and Ronald Garcia Ruiz, along an international team of scientists, recently performed an experiment in which a sensitive laser spectroscopy technique was used to measure ...
Jul 15, 2022
0
41
Business
The amount of electricity generated by renewable resources hit a record 28% in April, a breakthrough number that shows how important renewable energy has become in U.S. energy markets.
Jul 11, 2022
1
15
Engineering
Millions of shipments of nuclear and other radiological materials are moved in the U.S. every year for good reasons, including health care, power generation, research and manufacturing. But there remains the threat that bad ...
Jun 21, 2022
0
49
Energy & Green Tech
The U.S. nuclear industry is generating less electricity as reactors retire, but now plant operators are hoping to nearly double their output over the next three decades, according to the industry's trade association.
Jun 21, 2022
0
4732
Energy & Green Tech
In a constantly evolving world, rapidly growing populations coupled with urbanization and industrialization are leading to an ever-increasing demand for energy. The challenge today lies in meeting these energy requirements ...
Jun 20, 2022
1
7
Energy & Green Tech
In many of the states with the nation's most aggressive climate goals, officials are investing millions of dollars to save the power source that was long the No. 1 target of many environmental activists: nuclear plants.
Jun 17, 2022
1
11
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
0
120
Business
The idea of nuclear power in Australia has been hotly debated for decades. Most of this discussion has been unproductive, focusing on symbolism and identity politics rather than the realities of energy policy. For that reason ...
Jun 10, 2022
0
26
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
