So, you know, I think the age of exploration is just beginning, not ending, on our planet.
I found myself drawn to the remote Kimberley region of Australia - in the far Northwest corner of the country - our last frontier.
It's more of an adventure when you set off into unknown territory, and there's nothing like that feeling you get when you discover a place on the Earth where no one has ever been.
The most promising words ever written on the maps of human knowledge are terra incognita, unknown territory.
I have come to believe that this is a mighty continent which was hitherto unknown.
I feel like New Zealand's a bit of an unchartered territory for me in a way.
We kind of know there's no more frontiers in the physical world. So the frontiers move from where we haven't been yet to where we've been and abandoned.
