Causes www.duluthnewstribune.com Arrowhead Refinery site in Hermantown finally removed from Superfund list Polluted with waste oil, cleanup took years after a lengthy legal battle with hundreds of defendants.
Politics www.bbc.com Climate change: Used cooking oil imports may boost deforestation Imports of waste oil from Asia, intended to cut carbon from transport, are linked to rising levels of deforestation.
