Anyone who has laboured long and hard over a tricky crossword puzzle knows it's true. Now scientists have come up with proof that too much thinking can be exhausting. Older people, in particular ...

It’s these types of innovation that are powering the next generation of AI entities that can ‘put on their thinking caps ... the computers can also ‘think hard.’ If you’ve ever ...

If hard thinking is metabolically costly, it makes sense that it would eventually make us run out of fuel. “That was an ...