UN secretary general: Trillions must be spent to tackle climate change

'Trillions of dollars to secure the health of the ocean and thereby the planet and thereby the wellbeing of our grandchildren is needed,' Peter Thomson said. 

The UN secretary general for oceans has said trillions has to be pumped into measures to tackle climate change.

Ambassador Peter Thomson told the Institute of International and European Affairs significant investment was needed to transform how people live from day to day.