BOB DYLAN

A plane throws the air down behind it by making a spinning vortex - a kind of mini-tornado.

Most of the vortex is moving downward, but not all. There's a huge draft of air moving down in the center, but the air also swirls upward on either side of the wingtips, reducing lift.

Why are our brains built in such a way that a broken heart can feel as painful as a broken leg?

When someone says, “He broke my heart,” we understand this as a metaphor. No one mistakes this for a medical emergency.

Physical and social pain seems as if they are worlds apart. Every tim...

• Some people find pleasure in watching something painful, finding that the pleasure is outweighing the pain.
• Others can feel a sort of catharsis, a liberation from their negative emotions, with the pain of others facilitating a kind of relief from their own traumas.
• Many fi...