Despite Upgrades, Explosions Continue on Trains Carrying Crude Oil

Firefighters douse blazes after a freight train loaded with oil derailed in Lac-Megantic in Canada's Quebec province on July 6, 2013, sparking explosions that engulfed about 30 buildings in fire.

Russell Gold, senior energy writer at the Wall Street Journal, discusses the dangers of transporting huge quantities of crude oil by rail. While new rail cars are sturdier, this has not prevented ruptures and explosive fireballs on these trains. Gold's book is The Boom: How Fracking Ignited the American Energy Revolution and Changed the World.