![phys.org](/proxy.php?image=https%3A%2F%2Fscx2.b-cdn.net%2Fgfx%2Fnews%2F2021%2Fnorwegian-salmon-farmi.jpg&hash=8f37dcab8b8d51ce5981452df63c137b&return_error=1)
Norway salmon farming moves to cleaner waters: indoors
Hundreds of thousands of salmon swim against the current in southeast Norway—in massive indoor tanks away from the nearest river as the controversial industry increasingly embraces greener land-based facilities.