1. She brought the animal on board as a control for experiments with the more mysterious creatures.

2. How might this mysterious other airline have addressed this issue with this unnamed pilot?

3. It turns out Super Bowl tickets are just the tip of a very mysterious iceberg.

4. East Antarctica has been a mysterious place when it comes to climate change.

5. What if they suddenly appeared in a mysterious manner on some enthusiastic Web site?

6. The bones were of mysterious animals known as haramiyids.

7. It also had a mysterious residue on its surface.

8. The mysterious object was still there.

9. Another mysterious quality known as dark energy accounts for 68 percent of the universe.