Uploaded April 2020 | Updated September 2026, 2 weeks ago

---

Fusion energy is the dream energy source - clean, green, safe and abundant - and it's coming. After decades of research in publicly-funded labs, several private companies are now building on the theoretical foundations and engineering concepts for commercialisation. But what is fusion energy, and why do we need it?

Presented by Dr Melanie Windridge and filmed in the Faraday Theatre of the Royal Institution, London.

With thanks to the Royal Institution rigb.org