1 - In modern times, death has been thought to occur when the vital functions cease breathing and circulation.

2 - Changes in tropical ocean circulation during the ice age may have caused huge numbers of icebergs to sail across the North Atlantic.

3 - Writers who have difficulty getting published sometimes circulate their work by e-mail or on Web sites.

4 - The increase in the number of newspaper articles exposed as fabrications serves to bolster the contention that publishers are more interested in boosting circulation than in printing the truth.

5 - For more than 40 years the radical thinker William Phillips edited Partisan Review, a magazine of small circulation and little money but with a great deal of influence.