On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Writing in the early 20th century, the celebrated author James Joyce noted that the Book of Kells—an illuminated manuscript depicting the four gospels of the New Testament in Latin—was "the most ...

Pessimism weighs on both body and mind. But research shows optimism can be trained, and even small steps can make a difference.