Technicians check the contamination level in the reactors of the Angra II nuclear plant during the uranium refuel in Angra dos Reis, 200km from Rio de Janeiro, Brazil, in 2006. Monitoring the levels of various elements, isotopes, and potential contaminates regularly and precisely, along with proper refueling, can help not only prevent problems, but can keep a reactor running in optimal shape for decades or, theoretically, even centuries. (VANDERLEI ALMEIDA/AFP via Getty Images)

The World Needs Nuclear Power, And We Shouldn’t Be Afraid Of It

As we embrace green solutions, nuclear should absolutely be part of the equation.

Ethan Siegel
9 min readOct 28, 2020

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For thousands upon thousands of years, humans have been harnessing the power of nature to provide energy to push our civilization forward. By leveraging fire, we gained the ability to cook food, provide warmth and shelter, and to protect us from predators. Later on, we tamed a variety of animals, using their labor to perform tasks that would be too strenuous or inefficient for humans. Eventually, natural power sources, like the wind, was harnessed through windmills to turn millstones, grinding grain without any human input at all.

An enormous transformation occurred when we began using natural sources — windmills, steam-generating combustion processes, even flowing water — to turn turbines, generating power and providing electricity. Today, the world’s energy needs are still dominantly met through these same processes, with non-renewable fossil fuels like coal, oil, and gas providing the dominant fraction of Earth’s energy uses. We’re powering a space age civilization with the same fossil fuels that emerged during the iron age. Now, more than ever, the world needs nuclear power, and yet fear, rather than facts, governs our policies. Here’s the science of why we should embrace…

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Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.