
CNN's Tom Foreman looks at whether North Korea's claims that it can strike U.S. bases in Japan and Guam are realistic.
RELATED STORY: North Korea warns that U.S. bases in Guam, Japan are within range
The damage is not radioactive but the debris field still poses a danger to marine life as it inches toward North America.
RELATED STORY: Preparing for tsunami debris, wherever it may make landfall
Millions of tons of debris washed out to sea by the Japanese tsunami is headed for the U.S. CNN's Chad Myers reports.
RELATED: Tsunami debris at Hawaii by 2013? Researchers seek more precision

