This Tiny Fish’s Mistaken Identity Halted a Dam’s Construction Scientists say the snail darter, whose endangered species status delayed the building of a dam in Tennessee in the 1970s, is a genetic match of a different fish.

Take Down the Dams on Maine’s Kennebec River Currently, the fish are blocked from their most important spawning tributary.

Libya Dams Were in Danger, Engineer Warned “The state wasn’t interested,” said an engineer who published a paper on why Derna’s dams, after decades of postponed repairs, might fail under the stress of a powerful storm.