We need cues that cover a range of moods including:

• disaster

• Investigation

• reflection

• hope

• hopelessness

...some moods lending themselves to a big sound (we are talking about the Earth after all!) and some more intimate (for personal stories). We could also think about giving some cues a geographical influence (i.e hinting at areas of the world that are likely to be particularly impacted and therefore the subject matter of stories).