With compromised , overfished seas , Dan Barber puzzled over how to keep fish on food chain . They built a series of canals and siphoned the water off the land and into the river . He says he visited fish farm in Spain that restored water flow , fish populations to wetlands . The farm is ecologically balanced , with abundant fish and 250 bird species , he says . Comment:
With compromised , overfished seas , Dan Barber puzzled over how to keep fish on food chain . He says he visited fish farm in Spain that restored water flow , fish populations to wetlands . The farm is ecologically balanced , with abundant fish and 250 bird species , he says . Comment: