A brutal winter freeze turns a Texas highway into a deadly trap, where drivers and first responders fight to survive a massive, fast-moving pileup.
When unprecedented floods rip through eastern Kentucky, families are forced to cling to rooftops and trees in a frantic effort to escape the raging waters.
As Superstorm Sandy crashes into the East Coast, a city braces for chaos and ordinary people find extraordinary courage as they face unprecedented threats from wind, fire and flood.
A luxury cruise turns into a nightmare as passengers scramble to escape a sinking ship in one of the most shocking maritime disasters of the 21st century.