But a provocative new theory suggests that thousands of years ago, juvenile diabetes may have evolved as a way to stay warm.

We may never know exactly where she came from, but there are some provocative theories.

Her provocative theory might be easily dismissed - why, after all, would people in cold climates suddenly stop buying sweaters?

"We'd be interested only if you could uncover some unknown information ... or perhaps develop a provocative theory on why she sank."

Ms. Vogel has a more provocative theory for the increase in female playwrights: "I hesitate to say it, but the current situation makes me think of secretaries.

TO the delight of heart disease researchers, a provocative theory linking vitamin consumption to protection from heart disease is holding up and gathering strength.

This provocative theory seemed far-fetched when it first came to public attention in an article in Rolling Stone in 1992.

In this book, Moore draws on anthropology, feminism and psychoanalysis to develop an original and provocative theory of gender and of how we become sexed beings.

But his provocative theories won him critics as well as admirers, and sometimes even he changed his mind about his theories.

A provocative theory that children are shaped more by temperament and peers than by parents.