Japan has completed the world’s most advanced undersea earthquake and tsunami detection system—3,500+ miles of fiber-optic ...

Authorities have evacuated dozens of people from remote islands in southern Japan that have been shaken by over 1,700 tremors in recent weeks.

The repeated tremors, some strong enough to topple furniture and make it hard to stand, have left the island community ...

A senior ruling party lawmaker plans to step down from a key post in the upper house after coming under fire for describing ...