Why Your Brain Makes Forbidden Laughter Impossible to Stop

Plus: Why dementia prevention may be simpler than anyone thought, a primate research debate, the space mirror plan astronomers hate, and Barcelona's 144-year dream realized

Pour the first coffee of the day. This morning covers the brain science behind why forbidden laughter is impossible to stop, a five-week training program that may cut your dementia risk by a quarter, and a planetary system that breaks every rule astronomers thought they knew. Also: 5,000 research monkeys in Oregon whose future is suddenly uncertain, gia…