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China has a record for creating the highest heat ever . Scientists temperatures of up to 70,000,000ºC in an "artificial sun". The new record was for keeping the heat at a temperature that five times hotter than the sun. It this for more than 17 minutes. The extreme heat was in a nuclear fusion reactor. The reactor is part of the Experimental Advanced Super-conducting Tokamak project (EAST). It the natural reactions that inside our sun and other stars. The scientists want to the artificial sun to create a near-endless supply of clean energy. The EAST project has cost China more than $950 billion. Total costs will over $1 trillion this year.

Scientists around the world have been for decades to nuclear fusion. They say it is the best way to produce clean energy. The nuclear fusion process no fossil fuels and behind no dangerous waste. If scientists can it work, the world will greener and cleaner. It could also mean lower fuel bills. EAST set the new record in a laboratory. Nuclear fusion technology is still not advanced enough to a global industry. However, researcher Dr Gong Xianzu, a nuclear fusion expert, says the EAST project an important step. He said: "The recent operation a solid scientific and experimental foundation towards the of a fusion reactor."

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