This will be the main liquid in your lava lamp. Choose a food colouring and add a few drops to the jar, it should sink to the bottom underneath the oil. Adjust the amount based on your desired ...

Jessica Orwig: No. It really does look like human fat. Jones: That's me and my boss opening up a lava lamp. [glugging] Oh! Are we getting these noises, guys? Our goal was simple: to figure out ...

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.

By Jessica Bumpus Samuel Elmore first saw a lava lamp when he was about 12 or 13 years old and walking through a shopping mall in Peterborough, England. “They had a window display and there was ...