Yesterday's earthquake, centered in Virginia, shook communities up and down the East Coast. In Washington D.C., it damaged the National Cathedral. In New York, it gave thousands of office workers a late lunch break. What did it do in your neighborhood? All day on our show, we heard responses from listeners giving us their own earthquake story. But now with the help of our friends at Mobile Commons, you can also tell the level of severity of the quake in your zip code. 

Japan is faced with a massive humanitarian crisis and potential nuclear threat after last week's earthquake and tsunami. The Great Kanto Earthquake of 1923 took the lives of over 140,000 Japanese citizens and destroyed the cities of Tokyo and Yokohama. During World War II, Hiroshima and Nagasaki were nearly wiped off the map in an instant flash of nuclear fission. And tsunami is, of course, a Japanese word. How has Japanese culture handled natural disaster and tragedy in the past?

The death toll continues to rise as Japan faces the damage caused by last week's tsunami and enormous quake. The country’s nuclear crisis has also escalated, as officials confirm partial meltdowns at several nuclear reactors. Kaz Fujimoto has been living in New York for 12 years, where he works as a store clerk at the Japanese grocer Katagiri & Co. He shares his reaction as Japanese Americans look at the disaster.

In 2010 alone, there have been earthquakes in Haiti, Chile, Argentina, Japan, Venezuela and the Bay Area. This weekend, it was feared a series of tsunamis would hit Mexico, California and Hawaii. Are this many natural disasters normal? Dr. Arthur Lerner-Lam, a seismologist at the Lamont-Doherty Earth Observatory helps contextualize the shocking size of the quake.

Aide workers in the U.S. speak on relief efforts underway in Haiti.

Aid groups are rushing into Indonesia on the heels of a second earthquake that shook the country yesterday. Indonesia's Health Ministry says nearly 3,000 people may still be trapped under rubble after a powerful earthquake two days ago. Aid organizations are mobilizing a relief effort.

We speak with Bill Horan, the president of Operation Blessing International, about what his organization is seeing on the ground in Indonesia as relief efforts get underway in earnest after this week's earthquakes.

We then talk with Amy Vaughan, a geophysicist from the U.S. Geological Survey. After three earthquakes in three days in Indonesia and the Pacific Islands, followed by tremors in California and Peru, we ask: How interrelated are all these seismological events?

A second earthquake struck Indonesia last night. This follows yesterday's devastating quake that has killed over 500 people, many trapped under collapsed buildings. The death toll is expected to climb further. The BBC's Karishma Vaswani joins us again from Padang, capital of West Sumatra, which is the nearest city to the earthquake's epicenter.

Over the course of two days last week, 50 to 60 small earthquakes shook the Earth at the foot of the San Andreas Fault. Some fear the chances of a Big One hitting the Los Angeles area are greater now than ever before. Leonardo Seeber is a Senior Research Scientist at Columbia University and he joins us on the show to talk about this.

If you don't remember what to do in the event of an earthquake, watch this clip: