A wild piece of coast was threatened by malls and McMansions until a reclusive billionaire couple arrived with the gift of a lifetime. Zoe Daniel reports.

The “Floating City” is sinking under rising seas and the weight of mass tourism. Now Venice’s residents are fighting to reclaim it, as Samantha Hawley reports.

It’s a Greek tale of tragedy, heroism and mind-blowing incompetence. Eric Campbell tells the story of the world’s deadliest bushfire since Australia’s Black Saturday in 2009 — and the fury in its aftermath.

They sound like science fiction, but radical remedies to slow global warming are on the way. Eric Campbell goes in search of crazy brave ideas to save the world.