InsideClimate: A warehouse next to highway I-40 here at the edge of Mayflower, Ark., houses the command center for the ongoing cleanup of thousands of barrels of spilled Canadian heavy oil [3], but it is inaccessible to media. Tightly controlled by ExxonMobil, which was responsible for the spill, access to even the parking lot is not permitted. A security guard now stops anyone without a red lanyard and ID badge from passing into the gated compound. Thousands of barrels of oil from Alberta's tar sands regionsimilar...