11.   The problems escalated because the charter holder, the Window Rock Unified School District, was too far away to keep an eye on the school.

12.   The pot problem escalated when a New York TV station showed footage of Molinari denying ever using marijuana in an interview several years ago.

13.   Trafline said from her experience, the problem only escalates as kids get older.

14.   Wildey believes the problem is escalating because of resistance to pirimithos-methyl and other organophosphate pesticides.

15.   But the problems escalated, said FAA flight standards official Bill White.

16.   Coomaraswamy said that while the trafficking rings were low-level, the problem may escalate if not dealt with.

17.   Reliable estimates for the rest of the world are not available, but researchers say the problem is escalating across the globe.