Earthquakes

http://www.nature.nps.gov/geology/usgsnps/pltec/pltec3.html#divergent media type="youtube" key="dXDYoCqwSbM" height="315" width="560"media type="youtube" key="bBCfjZXWtMA" height="315" width="420"media type="custom" key="21194778"media type="custom" key="21194768"media type="custom" key="21194750"media type="custom" key="21194728"http://news.bbc.co.uk/2/hi/science/nature/7533950.stm

Earthquakesmedia type="custom" key="21194760"