What was done
Sediment cores taken from the center of Lake Shelby in Alabama were studied to determine the history of intense (category 4 and 5) hurricane activity there over the past 3,500 years.

What was learned
Liu and Fearn report that over the period of their study, "major hurricanes of category 4 or 5 intensity directly struck the Alabama coast ... with an average recurrence interval of ~600 yr."  They also note that the last of these hurricane strikes occurred approximately 700 years ago.  Hence, they conservatively conclude that "the Alabama coast is likely to be struck by a category 4 or 5 hurricane within the next century."

What it means
The authors note that "climate modeling results based on scenarios of greenhouse warming predict a 40% - 50% increase in hurricane intensities in response to warmer tropical oceans."  Hence, you can bet your boots that if a category 4 or 5 storm were to strike the Alabama coast sometime in the next several years, climate alarmists would hold it up as a vindication of their claims.  In reality, however, it would be no vindication at all. It would merely demonstrate the soundness of the age-old adage that history repeats itself.