cool down

"You throw in the right ratio of ingredients and then melt everything. It goes above 2,000 degrees Celsius and is slowly cooled down to form a material crystal."

"When the planet warms, rocks weather faster and absorb more CO2, allowing the Earth to cool down again," explains Dominik Hülse.

Yoshinobu Yamamoto’s arm had barely cooled down from perhaps the most important start of his life, but his mind was already turning to what was next.

It confirmed the cause of food poisoning was Clostridium perfringens, a bacteria which can grow while food cools down and there is no wider public risk.

"In order to cool down, they have to move all these elements that produce heat -- uranium, thorium and potassium -- towards the surface, because if these elements stay deep, they create heat and melt the crust."