What is the safest form of energy?

I was recently reading A Bright Future, which advocates for nuclear power as a response to climate change. It compares coal power and nuclear power and their relative risk. They helpfully distinguish between what is scary and what is dangerous, and how that can distort our perception of risk.

Nuclear power is relatively safe, but terrifying when it does go wrong. The fear looms large and many people are more wary of it than necessary. Coal power isnt scary, but it is far more dangerous.

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