Helping the giant salamander breed

In their effort to control flooding, the Japanese have dammed up their rivers. But that move shut out giant salamanders from their natural breeding places and have made it impossible for them to get upstream. Scientists in Japan have worked out a way to allow their legendary giant salamander to get around dams, through elaborate staircases and small waterfalls that preserve the salamander’s natural surroundings. Now they hope the species will thrive in the wild once more.