Earth's crust is the planet's outermost layer. It is made of solid rock and sits on top of another layer, called the mantle.
One of the strongest earthquakes ever recorded struck Russia's Far East early Wednesday, causing tsunami waves to wash ashore in Japan and Alaska and calls for people around the Pacific to be on alert ...
One of the strongest earthquakes ever recorded struck Russia’s Far East early Wednesday, causing tsunami waves to wash ashore in Japan and Alaska and calls for people around the Pacific to be on alert ...