TECTONIC PLATES

Alaska, known for its wild beauty and seismic activity, felt another shake early Thursday. A 6. 0 magnitude quake hit near Susitna, roughly 30 miles from Anchorage, around 8:11 a. m. local time. The U. S. Geological Survey reported the event, but don't worry, no tsunami is expected this time. Good

Deep beneath the Earth's surface, something incredible is happening. A column of molten rock is rising up in pulses, like a heartbeat. This is causing a big crack in the African continent. Scientists have been studying this in a place called Afar, in Ethiopia. Here, three huge cracks in the Earth's