An elderly person walking in snow on a flooded road in Ishinomaki, Japan a few weeks after the earthquake and tsunami in March 2011 BJ Warnick/Newscom/Alamy
The magnitude-9.0 earthquake and resulting tsunami that struck Japan in March 2011 killed 20,000 people and . Now there is evidence that they may also have contributed to cognitive decline in certain people.
at Harvard University and his colleagues wanted to know whether directly experiencing the earthquake and tsunami, as well as the disruption both left in their wake,…



