NOAA Confirms Presence of Subsea Oil Plumes in Gulf By:  Lea Winerman The federal government confirmed Tuesday that subsea clouds of dispersed oil have been found at least 40 miles from the site of the Deepwater Horizon oil leak in the Gulf of Mexico. The finding, which confirms what some independent scientists first reported last month, has renewed concerns over the effects of the oil spill on deep-sea life. "NOAA is confirming the presence of very low concentrations of subsurface...