In the central nervous system, the neurotransmitter serotonin helps regulate mood, sleep, sexuality and appetite. It plays a part in many disorders, such as depression, migraine, bipolar disorder and anxiety.

These sterling silver earrings made from the molecule hang on sterling french wire.

They are packaged in a recycled gift box and an information tag about serotonin is included.

Get your own here.

Entire operating systems and programs used to be distributed on floppy disks, but as time and technology progressed, floppies were superseded by CD-ROMs, then USB and high speed internet connections as a way to distribute data and program.

Each of them also has a clear stopper to prevent them from unintentionally slipping out of your ear. They’re packaged in a white silver-tissue-paper-filled gift box with a black label (see the detailed photos). .925 sterling silver ear hooks, cell phones, and chain.

get your own here.