31.   In his crowning achievement, he unraveled the mysteries of viral hepatitis and helped defeat that family of debilitating diseases.

32.   More important, they are unraveling the mysteries of a fragile ecosystem that may be destroyed before it is fully understood.

33.   Over the years, publishers have made limited attempts to unravel the mystery.

34.   Other laboratory advances identifying co-factors that help HIV enter cells promise to help scientists unravel some mysteries about one of the wiliest viruses known.

35.   Paddington Bear stumbles in and out of holiday mischief as he tries to unravel the mystery of a department store sleigh ride and Santa.

36.   Researchers will likely work long after to unravel the mystery of the figurines.

37.   Seeking meaning in her cryptic speech, he unraveled the mysteries of her middle-class past.

38.   Rosenbaum examines both Hitler and the historians, philosophers and psychologists who have struggled to unravel his mysteries.

39.   So increasingly, they are turning to science to unravel the mystery.

40.   State Farm Insurance uses the longer format to unravel the mysteries of insurance.