James Palmer: CEO of the Ministry for the Environment says public transport's not always an option - Heather du Plessis-Allan Drive

The Ministry for the Environment says that public transport is not always an option.

It comes after findings reveal that it spent $900,000 on flights over 11 months, but only $250 on public transport.

Chief Executive James Palmer says that they've reduced air travel by 66% and they encourage alternative modes where possible.

He says for Ministry staff travelling around New Zealand, public transport is not possible in many places.

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