How travel agents want to make tourism more sustainable

Travel agents in New Zealand and throughout the world are pledging to make tourism more sustainable. 

Forty-two brands, including Contiki and Trafalgar, are promising to refuse single use plastics, offset carbon, and respect the people and animals of the countries they visit.

And they want their customers to take the pledge too.

They'll honour people's homes, buy locally made at a fair price, and experience wildlife in nature - but never on the back of elephants or donkeys.

The Travel Corporation is hoping customers take the pledge too. 

It reflects a similar move by Air New Zealand and government agencies, encouraging visitors look after the country.

Ten percent of the world's GDP comes from tourism, and air travel's projected to double in 20 years - making it hard to leave only footprints.