How does nuclear energy harm the environment

I found all of this information in the website: https://sciencing.com/nuclear-energy-affect-environment-4566966.html

under the heading "Carbon Dioxide", it states:

"but high amounts of carbon dioxide are emitted in activities related to building and running the plants. Nuclear power plants use uranium as fuel. The process of mining uranium releases high amounts of carbon dioxide into the environment."

under the heading "Low Level Radiation", it states:

"Nuclear power plants constantly emit low levels of radiation into the environment."

Nuclear energy has been proposed as an answer to the need for a clean energy source as opposed to CO2-producing plants. Nuclear energy is not necessarily a clean energy source. The effects nuclear energy has on the environment pose serious concerns that need to be considered.

Nuclear energy does not release greenhouse gasses so it does not contribute to global climate change. However, nuclear wastes are difficult to manage and accidents are serious concerns. Nuclear power has been called a clean source of energy because the power plants do not release carbon dioxide. While this is true, it is deceiving. Nuclear power plants may not emit carbon dioxide during operation, but high amounts of carbon dioxide are emitted in activities related to building and running the plants. Nuclear power plants use uranium as fuel. The process of mining uranium releases high amounts of carbon dioxide into the environment. Carbon dioxide is also released into the environment when new nuclear power plants are built. Finally, the transport of radioactive waste also causes carbon dioxide emissions.

Nuclear power plants constantly emit low levels of radiation into the environment. There is a differing of opinion among scientists over the effects caused by constant low levels of radiation. Various scientific studies have shown an increased rate of cancer among people who live near nuclear power plants. Long-term exposure to low level radiation has been shown to damage DNA. The degree of damage low levels of radiation cause to wildlife, plants and the ozone layer is not fully understood. More research is being done to determine the magnitude of effects caused by low levels of radiation in the environment.  

Radioactive waste is a huge concern. Waste from nuclear power plants can remain active for hundreds of thousands of years. Currently, much of the radioactive waste from nuclear power plants has been stored at the power plant. Due to space constraints, eventually the radioactive waste will need to be relocated. Plans have been proposed to bury the radioactive waste contained in casks in the Yucca Mountains in Nevada.

There are several issues with burying the radioactive waste. Waste would be transported in large trucks. In the event of an accident, the radioactive waste could possibly leak. Another issue is uncertainty about whether the casks will leak after the waste is buried. The current amount of radioactive waste requiring long-term storage would fill the Yucca Mountains and new sites would need to be found to bury future radioactive waste. There is no current solution to deal with the issue of radioactive waste. Some scientists feel that the idea of building more nuclear power plants and worrying about dealing with the waste later has the potential of a dangerous outcome.

I hope this helps sorry I know its a lot

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