And as the truck came to a rest, its tank settled downhill, next to the water. That last detail was crucial for the truck's cargo: some 102,000 spring Chinook smolts, or young salmon, that had ...

See All Key Ideas One after another, salmon leapt out of the water and hurtled themselves at the falls, propelled by instinct to move upriver. They, like all Pacific salmon, were born in ...