Re. Janet Parkin’s columns, What is renewable natural gas and where does it come from (Castanet, Dec. 27) and Climate and health effects, marketing strategy and future potential of renewable natural ...

Fortis stock appears to be a better utility stock buy. It offers a safer dividend that's important to its conservative ...

Kristy Dyer, whose column Sustainability Spotlight usually appears in this spot every second week, is on an extended leave.