A weird illusion is evoked once you stare at your reflection in a mirror. It’s a famous old Halloween trick that scientists are starting to explore. You can give it a try. Sit in a dark room, about a meter (3 ft) away from a mirror and stare at the reflection of your face for about ten minutes. Keep the room as dark as possible, while still being able to see your reflection.
Through history, some have concluded that a pessimistic attitude, although justified, must be avoided. Worrying takes years off your life, right? Well, maybe not. Pessimists rejoice: happy-go-lucky, care-free peers of yours probably won’t live as long as you. New research suggests that the pessimists wind up outlasting the optimists.