American Songwriter16h
5 Rock and Metal Albums from the ’90s That Only Cool Kids Owned
Remember massive CD cases and bulky portable CD and cassette players? If you do, you might have owned these '90s rock and metal albums.
Scientific American23h
Here’s How to Make Flexagons—Folded Strips of Paper with Strange and Surprising Properties
The strip is folded backward along the line ab and turned over (B). It is then folded backward again along the line cd and the next to the last triangle placed on top of the first (C). The last ...