This white humpback whale is a popular icon in Australia
This rare specimen was spotted again a few days ago. Meet Migaloo, Australia's most famous whale.
How cacti survive in the desert
Wave Rock is one of Australia's must-see features
The Kilauea volcano is only one of 169 active volcanoes in the USA
The extraordinary Salt Pans of Maras
General Sherman: the largest living organism in the world
The Horsetail fall attracts thousands of visitors each year