The crisis in Japan continues to deepen. Thousands have died and officials say the numbers could reach into the tens of thousands. There is now an additional crisis - the possible meltdown of damaged nuclear reactors. 

The 9.0 earthquake triggered a tsunami that buried many northern towns in a wall of water. It has been described as the largest earthquake on record for Japan. Aftershocks continue to shake the country, with a second large earthquake of 7.4-magnitude.

Thousands in the tsunami zone are without water, heat, electricity, or phone service, and some areas have been entirely cut off. 

Emergency response agencies have reached Japan and are working around the clock with local health authorities to provide expertise and logistical support -- and help fill critical gaps. They are assessing post disaster conditions and prepping critical supplies for delivery to the earthquake zone. Many agencies will focus their efforts on earthquake and tsunami affected communities that have not yet been reached. 

Sign the pledge of support for relief agencies on-the-ground in Japan. Tell relief workers "thank you" for their difficult but life-saving work to help the Japanese people.