Is nuclear fusion a pipe-dream? Scientists are celebrating after breaking a record for producing energy. It is a step to unlimited power. 

Last week, scientists set up a reaction. It created enough energy to power over five trillionOne thousand times bigger than a billion. kettles.

Some people hope this is the next step to unlimited energy. 

But not everyone is so sure. Even though the test broke records, it still used more energy than it made. 

Is nuclear fusion a pipe dreamSomething that will never happen - that a smoker might dream about while puffing on a pipe.?

Yes! This experiment only proves that fusion is possible. But it also shows that more work needs to be done to use it to power the whole planet. 

Maybe not! Lots of scientific breakthroughs seem impossible before they happen. There was once a time where people thought humans would never fly in planes. Now we travel in them around the world!