Beneath The Waves

The oil on the surface of the gulf is shrinking, which is welcome news. But Susan Shaw continues to worry about the deep sea:

More caveats here. Kate Sheppard reports on natural gas, which was "some 40 percent of what is escaping from the well":

In the 10-mile radius around the well site, research teams havemeasured methane levels in the water averaging 100,000 times normallevels. [John Kessler, a professor of earth system science at Texas A&M University:] says levels are up to a million...