Thought we were done with this problem? A new study from Britain finds that the acid rain pollution of the 1970s and 1980s is still largely with us. Action taken over the last 20 years across Europe to clean up acid pollutants (from power generation and industry) in rivers has fallen far short of expectations. Apparently the problem is more stubborn than we'd imagined (read why it's even more stubborn in the U.S). Recent studies in Galloway, the Scottish Highlands and Wales reveal that many streams are still highly acidified. Biological recovery has been particularly poor, with more than two thirds of all streams sampled still acid enough during high flow to cause biological damage, and with metals at toxic concentrations. . . Oops. Further proof that the not-paying-attention thing never really works.—Julia Whitty is Mother Jones' environmental correspondent. You can read from her new book, "The Fragile Edge," and other writings, here.