New York Times: It is nesting season here, and just offshore, Kemp’s ridley sea turtle No. 15 circles in the water before dragging herself onto the sand to lay another clutch of eggs. The sea turtle, affectionately nicknamed Thelma by a National Park Service employee, has already beaten some terrible odds. Still in the egg, she was airlifted here from Mexico in the years after the 1979 blowout of the Ixtoc 1 rig, which spilled millions of gallons of oil into the Gulf of Mexico and covered the …