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Articles on Nuclear fusion

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Magnetic fusion reactors contain super hot plasma in a donut-shaped container called a tokamak. dani3315/iStock via Getty Images

Nuclear fusion hit a milestone thanks to better reactor walls – this engineering advance is building toward reactors of the future

In January 2022, the JET fusion experiment produced more power over a longer period of time than any past attempt. Two physicists explain the engineering advancements that made the result possible.
Fusion could create more energy than any other process that could be produced on Earth. Shutterstock

Nuclear fusion: how excited should we be?

Fusion produces more energy per gram of fuel than any other process that could be achieved on Earth.
Fire a set of high-power lasers at a tiny speck of hydrogen isotopes and you can initiate nuclear fusion, the process that powers the Sun. National Ignition Facility

How much energy can people create at one time without losing control?

Scientists are working on ways to make lots of energy by converting matter into energy. The trick is keeping the process under control. One possibility is nuclear fusion – the Sun’s power source.
Artist’s interpretation of the inside of the Sun. James Josephides, CAS Swinburne University of Technology

Curious Kids: what does the Sun’s core look like?

If you could go right into the middle of the Sun, everything would be incredibly bright - and perhaps a little bit pink.
A nuclear reaction is under way inside the Sun. Emily Nunell/The Conversation CC-NY-BD

Curious Kids: how is the Sun burning?

It’s true that here on Earth, if you want to burn something you need oxygen. But the Sun is different. It is not burning with the same kind of flame you would have on Earth if you burned a candle.
The coils winding facility building in France, where a global effort to build the ITER fusion energy reactor is underway. Rob Crandall/

Why nuclear fusion is gaining steam – again

As fusion becomes more technically viable, it’s time to assess whether it’s worth the money because breakthroughs in the lab don’t guarantee success in the marketplace.
The superheated plasma inside the fusion reactor is twisted by magnetic fields. IPP, Matthias Otte

A new twist on fusion power could help bring limitless clean energy

Fusion power, if it works, offers vast amounts of clean energy and almost zero carbon emissions. A new experimental fusion reactor has come online, and it uses a curious twisted stellarator design.
Hydrogen is built into helium at a temperature of millions of degrees. NASA/SDO (AIA)

Before fusion: a human history of fire

Fire has played a vital role in human history, and will continue to. Recent advances in fusion herald the freeing of fire from captivity back into its natural form.

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