Communities need hard data to prove they're been affected by pollution. But the government databases that keep track of those numbers are now under threat.
A protracted delay in the Trump administration coming up with its own carbon-cost estimate could empower environmentalists pursuing legal challenges to mining.
In the first half of the 20th century, coal communities across the Illinois Basin boomed. In 1990, new regulations set off an industry implosion, and the vitality of the region went with it.