The Canadian Arctic is a world of extremes with the vast and seemingly barren landscapes of rock, ice and snow.
Fraser Island is a World Heritage area, a spectacular wilderness of beautiful lakes and silent creeks. A surprising diversity, all on sand.
We explore how and when brains emerged in the evolutionary story, what kinds of problems they solve, and why all animals have low IQ.
A recent discovery suggests that the saltwater crocodile could get a whole lot bigger. Is it possible that it could reach nightmarish proportions?
If it creeps, crawls, buzzes or sheds its exoskeleton, there's a chance it could cure a major illness that's stumping modern medicine.