Jeffrey Kluger

Scarily, football helmets, which do a fine job of protecting against scalp laceration and skull fracture, do little to prevent concussions and may even exacerbate them, since even as the brain is rattling around inside the skull, the head is rattling around inside the helmet.

I'm fascinated by the ways in which people express themselves, because their responses are often counter to what they're actually feeling. Like when they're frightened, they tend to freeze. When they're angry, it doesn't always come out as volume. There are wonderful contradictions in the way that people express their emotions.