Scientists Reveal Hidden Secret That Helped Make the Great Lakes
A hotspot that is now located in the Atlantic played a key role in forming the lakes, home to a fifth of the world's fresh ...
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In Pictures: Mauna Loa erupts
It covers 2,035 sq miles (5,271 sq km), and is one of a chain of five volcanoes which form Hawaii's Big Island ... and neighbouring volcanoes from a "hotspot" deep within the Earth.