Research statistical data regarding meteorological or geological phemomena exhibiting unusual patterns or effects. For example, an unusual number of earthquakes have been observed in McAdam, New Brunswick. (CBC news story here). Establish a thesis regarding your area of study.
Quantity of text and other material in your finished project is a secondary concern. You need to back up your thesis with a balanced blend of graphical, statistical and primary source data. How much or how many of each will depend on your approach to defending your thesis.