A triple disaster — earth, water and nuclear — struck Japan on March 11, 2011, when the biggest earthquake in its history ripped the seafloor.

The magnitude-9.0 Tohoku earthquake, which struck two years ago today, was also powerful enough to slightly alter Earth's gravity field under Japan. Email Becky Oskin or follow her @beckyoskin.

Similarities between the March 16 earthquake and a temblor that rattled the Tohoku region in February 2021 have fueled speculation that the offshore area has become an increasing hotspot for ...

Japan’s “major earthquake” warning has put much of the country on high alert, even as some experts cast doubt on whether such an advisory is necessary or accurate.

An 8.8 magnitude earthquake hit off the coast of Russia's Kamchatka Peninsula, setting off tsunami warnings around the world.

An 8.8 magnitude undersea earthquake near Russia's Kamchatka Peninsulasent tremors across the Pacific early Wednesday, ...