Watch: Scientists in France hoping to replicate the process that powers the sun

Scientists in France are halfway through building a colossal experiment to harness an energy production holy grail.

They're hoping to help save planet Earth by replicating the process that powers the sun - nuclear fusion.

The project has 30,000 people working on it and is estimated to cost around $32 billion.

Watch Channel Nine's report on the game-changing technology in the video above.