Please consider donating to Behind the Black, by giving either a one-time contribution or a regular subscription, as outlined in the tip jar to the right or below. Your support will allow me to continue covering science and culture as I have for the past twenty years, independent and free from any outside influence.
Link here. I agree with the first commenter that another sound no longer heard and not included in the list is the sound of a dial-up modem getting online. There is also the sound of rotating the radio dial past many stations.