When it comes to managing crocodiles, we are learning that it is actually more important to manage people. Learning how to keep people safe from crocodiles will ultimately protect visitors to croc territory as well as the crocodilians themselves.

Crocs are apex predators, and as with all apex predators, they are critical to the environment: if you lose the crocs, you'll lose the barramundi, you'll lose the crabs - a catfish can eat 30,000 barramundi fingerlings, and who do you think eats the catfish? Crocs.

Never walk past a problem with an animal - fix it.

It pays to be in the best shape possible when you're wrangling the largest reptiles on Earth!

I think architects have a major role in being responsible for illustrating what the future could be. Because of the very strong political and commercial climate, many architects are trying very hard to solve everyday issues, to respond to the authorities.

These days, most nature photographers are deeply committed to the environmental message.

You want to keep the severity of our environmental problems in mind enough to keep yourself motivated but not enough to paralyze you into depression.

I think the climate has been changing for billions of years.