A sharp reply takes a second to say. Its effect can last for weeks. The spiritual lesson for October 2 is that anger makes a poor editor. It exaggerates, and it never reads the message back before ...

The question of whether Pluto is a planet has been around almost since Clyde Tombaugh discovered it in 1930. Astronomers always have said it was kind of the hanger-on of the solar system, with its ...