SIOUX CITY (KTIV) - Gather your supplies! In this episode we will use everyday materials to learn about the formation of volcanoes. Volcanoes are openings where lava, small rocks, and gas erupt ...

There are many different kinds of volcanoes, ranging from the Hawaiian type, which produces gentle, effusive eruptions that tourists can observe from mere steps away, to the andesitic variety ...

New research sheds light on the earliest days of the earth's formation and potentially calls into question some earlier assumptions in planetary science about the early years of rocky planets.