Is nuclear fusion the future? The race is heating up to bring star power down to Earth. But some scientists think this technology will only ever be science fiction.
China’s artificial sun sets new world record
Starstruck: Large stars such as the one above produce huge amounts of energy. Glossary
Fusing - Joining together into one thing.
Fossil Fuels - Non-renewable fuels such as coal or gas, formed in the geological past from the remains of living organisms.
Greenhouse gases - Greenhouse gases, which increase the atmosphere's capacity to hold heat, are vital to life on Earth: without them the planet would be freezing. But human activity is disturbing the delicate balance that created the conditions for life as we know it. Carbon dioxide is responsible for 60% of the manmade greenhouse effect, but we also produce smaller quantities of methane, ozone and nitrous oxide, which are even more damaging.
Global warming - The Earth is getting hotter due to climate change.
Benefits - The upsides of something.
Expensive - Costs a lot of money.
Solar - To do with the sun.