Aftershocks Threaten More Damage to Crippled Japan Nuclear Plant

Aftershocks rattling Japan after the nation’s record quake on March 11 may continue for at least six months, increasing the risk of damage to a crippled nuclear plant at the center of the worst nuclear crisis since Chernobyl.

“Aftershocks as big as magnitude-7 are likely to continue hitting in eastern and northern Japan for at least six months,” said Teruyuki Kato, a professor at the University of Tokyo’s Earthquake Research Institute.