When people are playing music in their earphones, loud enough that you can hear it, while sitting next to them on the bus, they are absolutely damaging their he

When people are playing music in their earphones, loud enough that you can hear it, while sitting next to them on the bus, they are absolutely damaging their hearing. And I'm not even talking about big headphones, which do tend to leak a lot of sound, I'm talking about the little earbuds. The sound level in their ears must be off the charts.