A common misconception is that magma comes from the Earth's molten core. It really comes from the mantle, the layer between the core and the crust. Will it ever run out?
Over the years, archaeologists have excavated an abundance of important fossils from the La Brea Tar Pits, also known as Rancho La Brea. How knowledgeable are you about this prehistoric place of many a mammoth's demise?