InsideClimate: Homeowners whose lives are still in limbo after thousands of gallons of oil streamed into their neighborhood from a ruptured pipeline on March 29 [3]might never know precisely how much of the sticky black goo oil actually spilled. The working estimate is that 5,000 barrels210,000 gallonsof Canadian heavy crude oil poured from a 22-foot break in ExxonMobil's Pegasus pipeline [4] on that Good Friday afternoon. But officials with the U.S. Environmental Protection Agency [5] and Exxon say the actual...