Another oil train explodes in West Virginia. Here's why this keeps happening. - Vox

Another oil train explodes in West Virginia. Here's why this keeps happening. - Vox: "This is the second derailment of an oil train along this CSX line in less than a year. In April 2014, a train crashed in Lynchburg, Virginia, and caught fire, with thousands of gallons of crude spilling into the James River. Meanwhile, an oil train in northern Ontario derailed and caught fire just last Thursday.

These aren't isolated incidents. Since 2009, there have been more than a dozen accidents involving trains carrying crude or ethanol in the US and Canada — including the notorious explosion in Lac-Mégantic, Quebec in 2013 that killed 47 people. Here's a rundown of what's behind this trend:"
More trains are carrying crude, leading to more accidents

Two possible culprits: Volatile oil and older, flawed tank cars

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