In Japan, thousands of people are still homeless and all of the nation’s nuclear reactors are still offline, four years after a magnitude 9.0 earthquake and tsunami caused the world's worst nuclear disaster since Chernobyl.
ຍີ່ປຸ່ນ ລະນຶກເຖິງ ວັນຄົບຮອບ 4 ປີ ຂອງແຜ່ນດິນໄຫວ
![Japan's Prime Minister Shinzo Abe attends the national memorial service for the victims of the March 11, 2011 earthquake and tsunami, in Tokyo, March 11, 2015.](https://gdb.voanews.com/1b2fefbb-ef62-4cbb-b1db-d83bf596d4ab_w1024_q10_s.jpg)
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Japan's Prime Minister Shinzo Abe attends the national memorial service for the victims of the March 11, 2011 earthquake and tsunami, in Tokyo, March 11, 2015.
![People offer prayers for the victims of the 2011 earthquake and tsunami as they observe a moment of silence at 2:46 p.m. when a magnitude 9.0 earthquake struck off Japan's northeastern coast four years ago, at Ginza shopping district in Tokyo, March 11, 2015.](https://gdb.voanews.com/05fe5333-62a7-4fa9-b366-a33dd1205ab7_w1024_q10_s.jpg)
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People offer prayers for the victims of the 2011 earthquake and tsunami as they observe a moment of silence at 2:46 p.m. when a magnitude 9.0 earthquake struck off Japan's northeastern coast four years ago, at Ginza shopping district in Tokyo, March 11, 2015.
![In this March 6, 2015 photo, some objects from the March 11, 2011 tsunami remain in Rikuzentakata, Iwate Prefecture, northeastern Japan.](https://gdb.voanews.com/71d7390b-8b5e-4f9d-930d-18af564cfc1b_w1024_q10_s.jpg)
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In this March 6, 2015 photo, some objects from the March 11, 2011 tsunami remain in Rikuzentakata, Iwate Prefecture, northeastern Japan.
![Japan's national flag flies at half-mast to mourn victims of the March 11, 2011 earthquake and tsunami, at the Parliament building in Tokyo, March 11, 2015.](https://gdb.voanews.com/a10e7455-c062-4a71-ac5a-b9ca0dd46f00_w1024_q10_s.jpg)
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Japan's national flag flies at half-mast to mourn victims of the March 11, 2011 earthquake and tsunami, at the Parliament building in Tokyo, March 11, 2015.