Nevada-based Desert Research Institute

Circling thousands of feet above Tasmania's farmland in a light aircraft, Christina Nebel prepares to release tiny chemical particles as part of a cloud-seeding scheme estimated to have helped boost rainfall on the Australian island by at least 5 per cent.

Circling thousands of feet above Tasmania's farmland in a light aircraft, Christina Nebel prepares to release tiny chemical particles as part of a cloud-seeding scheme estimated to have helped boost rainfall on the Australian island by at least 5 per cent.