Now scientists have come up with proof that too much thinking can be exhausting ... hard on a task drains glucose from a key part of the brain. Glucose, which is transported around the body ...

Memories are stored in a region of the brain called the hippocampus ... He stood there, stunned, as they burned and fell, thinking to himself, “No way, man. This is the wrong movie.” ...

“Nobody would argue that the fundamental biology of the human brain has changed in that time ... is pre-packaged in a few sentences, no critical thought required) • An explosion in the volume ...