Scientists warn Tonga eruption may damage environment for years

It's been three days since the volcanic eruption and tsunami in Tonga – but the full scale of the destruction is only now beginning to emerge. The government says several smaller islands have had to be evacuated – because nearly every home there was destroyed. Al Jazeera's Victoria Gatenby reports. – Follow us on Twitter: https://twitter.com/AJEnglish/ – Find us on Facebook: https://www.facebook.com/aljazeera/ – Check our website: https://www.aljazeera.com/ #Tonga
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