AMERICA - Oregon and Earthquakes

"Would a Major Earthquake Sink Portland or Seattle in Liquefied Soil?" PBS Newshour 4/12/2012

Excerpt

JUDY WOODRUFF (Newshour): Next, how scientists are preparing for the dangers of an earthquake in Oregon.

Yesterday, a quake with a 5.9-magnitude struck about 160 miles offshore, with no real impact. But, increasingly, researchers are worried about specific and lesser-known risks of a major tremor there.

NewsHour correspondent Tom Bearden reports.