Some are formed by mantle plumes, a column of hot rock that rises from deep within Earth’s mantle, a bit like a blob of wax floating to the top of a lava lamp. When the plume reaches Earth's ...

Morphing from small patches to giant blobs over a matter of days. Sort of like a lava lamp. Rakesh Mogul: “You ever took a lava lamp when it fully warmed up. These patches and blobs are always ...

Following is a transcript of the video. Narrator: Lava lamps might be the most cult item of lighting in the world. Since their invention in 1963, millions of the lamps have been sold across the globe.