Add Yahoo as a preferred source to see more of our stories on Google. These new "lava lamps" are based off NASA's invention used for rocket fuel. Would you want this ...

While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review ...

Since it tends to be associated with the shaga- delic 1970s, it is hard to believe the lava lamp is celebrating its 40th birthday. But although it seems somewhat younger, the ultimate retro “light ...