The 1970s were a whirlwind of bell-bottoms, mood rings and unapologetic self-expression. Decades later, that groovy energy is making a comeback, and not just in vintage stores and thrift shops. From ...

Add Yahoo as a preferred source to see more of our stories on Google. Whether it’s the 1970s or the early 2000s, mood rings are often associated with a few different time periods. They became very ...