Tonga - ashfall affecting food, water, agriculture - a podcast by RNZ

Soon after Saturday's eruption of Hunga-Tonga-Hunga-Ha'apai, the sky was blocked out and ash began to fall.
Early photos from Tonga show cars, roads and streets blanketed in debris.
Ashfall from volcanic eruptions can be hugely disruptive to infrastructure, water and crops.
Canterbury University Disaster, Risk and Resilience professor Thomas Wilson talks to Sarah Robson.

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