Bitterness: Maltreatment from a loved one. Cost: You're killing yourself. Bitterness results when you feel that you’ve been treated unfairly by someone important to you. Are you bitter about those ...

Sports psychologists are divided on whether bitterness over the trade will help or hinder his performance. Some experts believe bitterness can create a beneficial "fight mentality," while others say ...

“I actually hate the taste of mushrooms,” says Josh Hahn, as he flicks on the lights in the clean room. Which is funny, because Hahn’s livelihood depends on fungi. Here, inside the lab at the ...