Northern SnakeheadSept. 5, 2002: Biologists haul 800 pounds of dead fish from a pond in Crofton, Md., near Washington, D.C. They had poisoned the pond to contain the northern snakehead (at right). It is feared that the snakeheads could overwhelm native species and spread to other waterways throughout the region. In future years, snakeheads would occasionally be found in the Potomac River and elsewhere, but there are no indications of a widespread infestation.

Sept. 5, 2005: State and federal workers announce they have successfully plugged the levee breach in New Orleans’s 17th Street Canal — one of three major levee failures in the city from Hurricane Katrina.

Sept. 5, 2008: A Pennsylvania dentist is arrested for dumping medical waste off the Jersey Shore. Thomas McFarland pleads guilty and pays a $100,000 fine for dumping syringes, cotton swabs, and tooth-filling material from his boat. The waste washed ashore, closing beaches in the town of Avalon for five days.

Sept. 5, 2011:  Despite a relatively tame Atlantic hurricane season, NOAA reports that an all-time record 15 natural disasters with damages over $1 billion each have already occurred this year.

Photo: Department of Environmental Conservation (New York)

This feature is compiled by Peter Dykstra, an MNN contributor and publisher of Environmental Health News and The Daily Climate.