Hill Times: It’s critical the government find an accurate way to measure GHG emissions from Alberta’s tar sands, say experts. The Alberta tar sands project is the largest energy project in the world, but Canada still has no actual consensus on how much greenhouse gas emissions are emitted there, and without correct data Canada could be in a weak position to continue exporting oil to the United States under new GHG reduction legislation brought in by U.S. President Barack Obama last …