Our department has a very high turnover rate from people leaving after being repeatedly yelled at and demeaned by our boss. This is causing more strain on the remaining members due to unfinished projects, losing people, etc.

Besides the obvious 'change your job', is there any way to alleviate this situation? I want the boss to realise that he's harming his own team and change, but he either doesn't care or doesn't know. If for example HR was an option, how would that be approached? If I was to go talk to him, what can I say.