"World News Tonight" Podcast - April 18th, 2015

Severe Weather: Tornado watches in five states as more severe storms are firing up with 50 million people in the path.

Bus Fire: A senior trip came to an abrupt end when a bus carrying students from the University of Connecticut caught on fire. 

Gas Explosion: A California gas line explosion injures nearly a dozen people and forces emergency responders to evacuate hundreds of nearby residents.

GOP: Republican presidential candidates and potential candidates spoke to supporters at the GOP Leadership Summit in New Hampshire.

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