Vancouver Sun: Local greenhouse grower Village Farms is hoping to extract clean carbon dioxide -- as well as heat and electricity -- from the landfill gases it burns. The Delta-based grower has been burning methane gas from Vancouvers landfill to generate heat and electricity for 12 years at the firms Ladner facility under an agreement with the City of Vancouver and BC Hydro, according to the firms development director Jonathan Bos. But because landfill gas is chemically inconsistent and contains contaminants,...