We're joined by Tiffany Palmer, a civil engineer who has been investigating the benefits of reopening our urban streams.
Photo: Sprocket2cog / CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0)
To embed this content on your own webpage, cut and paste the following:
<iframe src="https://www.rnz.co.nz/audio/remote-player?id=2018740801" width="100%" frameborder="0" height="62px"></iframe>
for easy access to all your favourite programmes