By Rona Kobell, The Baltimore Sun Jan. 23--Environmentalists are urging the state to act quickly to clean up Maryland's Choptank River, which has become more polluted due to farm runoff and development as well as a major drop in the oyster population.

By Rona Kobell, The Baltimore Sun Dec. 9--It looked like just another beautiful day on the water as Bill Dennison and his crew of biologists pushed off from their pier at the Horn Point Laboratory and sailed toward the mouth of the Choptank River. The sun glistened on the waves.

By Tom Pelton, The Baltimore Sun Jun. 13--A dinosaur-era fish might experience a rebirth in the Chesapeake Bay. For the first time in three decades, scientists have found a mature female Atlantic sturgeon full of eggs in the bay, where the species was thought to be nearly extinct.