Sky: A group of climate change experts think energy generated by solar technology could be enough to power the whole world in the future.
UN scientists from the Intergovernmental Panel on Climate Change are expected to back up their claims in a report due to be released at a news conference in Berlin today.
But the United Kingdom is still a long way behind other European countries in using solar technology.
To power the whole country we'd need solar panels on every rooftop.
The problem is...