If you’re looking to one-up the basic store-bought decorations, and maybe teach your kid the basics of an Arduino while you’re at it — why not build a Peek-A-Boo Ghost! Using an Arduino ...

In November of 2024, Mark Tingay, a geologist from the University of Adelaide, posted on Threads about the appearance of a “peek-a-boo” or “ghost island”—an emergent mud volcano known as ...