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In recent years, private investment in fusion technology has accelerated dramatically, with over 10 billion US dollars committed by venture capital firms, sovereign funds and tech entrepreneurs.

What is the promise? A future of a plenty amount of carbon-free energy. But the challenge is that there is no fusion reactor that has yet produced more energy than it consumes.

To find out more Razor’s Edge reporter Thomas Koutis spoke to Professor Matthew Hole, Professor of Mathematical Sciences and Computing at the Australian National University.

Hosted on air on October 24, 2025, on Razor’s Edge by Annamarie Reyes