Damage to nuclear reactors in Japan has caused radiation leaks. How harmful could the radioactive material be to the surrounding areas? And, might the U.S. be threatened by the radioactive material?
David Brenner is the Director of the Center for Radiological Research at Columbia University. He talks to Kiran Chetry and Christine Romans about any potential risks facing Americans.
Zack Branham is a 24 year-old American who was in Japan teaching English when the quake struck.
Branham made it through the quake but had no idea if his girlfriend, who was at a coastal town four miles away, also survived. Determined to locate her, Branham traveled by foot for 20 hours through impassable roads until he finally found his girlfriend.
Branham talks to Kiran Chetry and Christine Romans about his experience.
Japan's coastal town of Otsuchi was one of the hardest hit by the quake and tsunami. The rescue and relief effort is underway there, as officials believe more than half the town's population of 19,000 could be buried under rubble.
Patrick Fuller, the International Red Cross' designated spokesperson in Japan, speaks to Kiran Chetry and Christine Romans about what he's seeing on the ground in Japan.
(CNN) Spent fuel rods containing radioactive material may have burned in Tuesday's fire at the Fukushima Daiichi nuclear plant - causing a spike in radiation levels, the plant's owner said.
The blaze started Tuesday morning but was later extinguished, Tokyo Electric Power Company said. It was unclear how much radioactive material may have been emitted, or what kind of health threat that could pose.
Glenn Sjoden, Nuclear Engineering Professor at Georgia Tech University, talks to Kiran Chetry and Christine Romans about the potential effects of the blasts.
In the wake of the 8.9 magnitude earthquake in Japan, Rep. Ed Markey (D-MA) is calling for a moratorium on new nuclear facilities in the United States.
American Morning's Kiran Chetry talks to Rep. Markey about the disaster in Japan and nuclear plans in the U.S.
Officials in Japan are working to contain any potential dangers after an explosion occurred overnight at a nuclear facility.
CNN Contributor and International Security Analyst Jim Walsh talks to Christine Romans on American Morning.