The Changes On Earth

It depends whether you want an answer about 'good' and 'bad' as moral judgements or as practical assessments of whether something is beneficial or not. Natural disasters and events are morally neither 'good' nor 'bad', though they are certainly not usually beneficial for those involved. As for events which are under human control, they may be 'good' for some and 'bad' for others. In Libya, for example, if you are Col. Gadaffi or one of his supporters, what is happening is 'bad' but, if you are one of the Liberation fighters (or, perhaps, a member of one of the United Nations countries), what it happening might be perceived to be 'good', either in the short or the long term.