Calgary Herald: Alberta must develop its energy resources in a responsible and sustainable way because the eyes of the world are closely watching, Premier Ed Stelmach said Thursday. In particular, they’re eyeing the oilsands and how the second-largest reserve in the world is developed. Stelmach noted $20 billion of new investment is projected for the oilsands this year, according to Statistics Canada. "Worldwide energy demand is expected to grow by 50 per cent over the next 30 years, and …