Grist: As floodwaters recede following epic storms that hit the region around Boulder, Colo., a week ago, officials are trying to get a grasp on the extent of oil and gas pollution triggered by the deluge.
Oil spills and washed-out chemical tanks only add to the devastation of the unseasonable drenching, which killed 10 people. Another 200 are still unaccounted for, though that number is falling as phone and internet services come back online.
Nearly 1,900 oil and gas wells were shut down ahead of...