Describes tsunamis and how people can be warned about them.

Many coastal areas of the United States are at risk for tsunamis. After the catastrophic 2004 tsunami in the Indian Ocean, legislation was passed to expand U.S.

Many coastal areas of the United States are at risk for tsunamis. After the catastrophic 2004 tsunami in the Indian Ocean, legislation was passed to expand U.S.

NOTE: NO FURTHER DICOUNT FOR THIS ITEM- OVERSTOCK SALE- Significantly reduced price The Pacific Tsunami Warning System, commonly referred to as the PTWS, has co