11.   But then, he finally ran down his nemesis in the Blue Grass on a day when the racing world was turned upside down.

12.   But when Chris is diagnosed with the melanoma, his world is turned upside down.

13.   Dr. Matzinger is turning the world of immunology upside down with her radical theory suggesting that the human immune system is activated by dangerous substances in the body.

14.   Eventually, Ms. Roberts does let her hair down and start turning the world on with her smile.

15.   He said the experience there turned his world upside down.

16.   He would see, in short, a world turned upside down, but socially more than technologically.

17.   If you make me give up TV, how can I turn the world on with a smile?

18.   Instead of Southern hospitality, the Australians are using their own blend of mellowness and megalomania to try to turn the world on its ear.

19.   Instead, a defining moment was thrust upon them, and their world was turned upside down before it was fully theirs.

20.   It has turned their world upside down, destroyed the foundations of their sense of security.