After a seven-month investigation, InsideClimate News has published an in-depth series on "the biggest oil spill you've never heard of" -- a million-gallon-plus spill of oil-sands crude near Kalamazoo, Mich., in July 2010. If you like your summer reading on the heavy side, dive right into part one, or download the whole series as an e-book.
Or you can get the highlights lowlights right here:
The takeaway: Tar-sands spills are incredibly, frighteningly difficult to clean up. And it's this same kind of oil that would be pumped through the Keystone XL pipeline if it gets built, sent 1,700 miles right down the middle of the country, and right over the Ogallala Aquifer, a major source of freshwater for drinking and irrigation.
Tar-sands or oil-sands crude -- technically called bitumen -- is goopy, tricky stuff: