"Agro asks: You mentioned the east coast of Australia experiences tsunamis every 300 years or so, when was the last one? Ian Plimer: The last one we see evidence of in the Nowra area of NSW and this took place about 250 years ago.
...
Tashi asks: Would the Tsunamis on the east coast affect which parts of the coast? Can this be predicted? Ian Plimer: In the past, tsunamis have affected the Illawarra and south coast of NSW and they have been triggered by earth tremors in the southern highlands, particularly around Robinson."
Then there's this scary stuff:
"PETER OVERTON: What will the consequences be if Anak Krakatoa — what we're standing on right now — blasts as a super-volcano, for Australia?
PROFESSOR IAN PLIMER: It would put Australia's economy back hundreds of years. We would have famine, we would have darkness. We would have a lot of dust in the atmosphere. We would have spectacular sunsets. We would destroy a lot of the vegetation. We would kill off our fishing grounds. It would have a major economic effect on Australia.
PETER OVERTON: Are we due for one?
PROFESSOR IAN PLIMER: We're due for another one. We're overdue. "